2. Location, location, location. Your choice of venue sets the tone for your wedding day--and accounts for a big chunk of the money you'll be laying out. Spend it wisely! Consider:

choosing a setting that's convenient to the most guests to minimize travel impacts
having the ceremony and the reception at the same place, or providing ecofriendly transportation between them
picking a unique local spot--like an art gallery, nonprofit space, organic restaurant or farm, green hotel, botanical garden, or green-roofed building--that supports a cause you believe in
an outdoor setting that will infuse the whole event with a natural sensibility (and require less decorating too!)
arriving at the ceremony in a horse-drawn carriage, cycle rickshaw, or hybrid car
offsetting your guests' travel (or asking them to do it as your wedding gift)

3. Please join us...Your invitation is the first impression guests will get of your green wedding. Look for:

recycled, handmade, or plantable papers processed chlorine-free and printed with vegetable- or soy-based inks
tree-free paper made out of hemp, banana stalks, bamboo, kenaf, or organic cotton
a printer who will use paper with a high percentage of post-consumer recycled content
papers that aren't metallic or plastic-coated, characteristics that make them hard to recycle
opportunities to reduce paper use, like sending a postcard (instead of multi-enveloped notes) for your save-the-date, or using online invitations and a wedding blog to let people know about the bachelor/ette parties, rehearsal dinner, and gift registry
In your invitations, let guests know about the ecofriendly hotel and transportation options in your area, whether it's hybrid rental cars or directions to the ceremony on public transportation. And don't forget to pick up some extra green paper products for your guest book, place cards, and thank-you notes. (You will be writing thank-yous, won't you?)

4. The final flingPlan bachelor and bachelorette parties that will keep the green theme going:
Stay local (and spend more time with your friends, and less dealing with travel stress).
Offset your trip if you choose a "destination" party.

Travel by train (and start the party early in the bar car).
Indulge in organic wine (or beer) tasting or an organic spa treatment.
Take a class and learn to make your own wedding flowers or jewelry.
Do something low-impact and outdoorsy like a camping, surfing, sailing, kayaking, or fishing trip.

5. Here comes the bride......in a gorgeous hemp-silk gown. When it comes to outfitting the bridal party, green options abound. You can:

go vintage (and update your look as necessary with tailoring and modern shoes and accessories)
pick clothes made from hemp, bamboo, and organic cotton or silk--or find a dressmaker who will make a one-of-a-kind item out of these sustainable fabrics (men's suits and shirts come in organic cotton or wool too)
borrow an elegant gown from a stylish friend
buy something you'll wear again (and let your bridesmaids do the same)
accessorize with a unique recycled purse and/or jewelry
use vegetable dyes on your shoes (or go barefoot for a beach wedding)
accentuate natural beauty with all-natural makeup
donate the dresses to charity after the event

6. Set the stageAdd beauty and style to your wedding décor, naturally. Here's how:
opt for organic flowers

find a florist who's diligent about recycling packaging and will source locally raised flowers
have bridesmaids carry matching purses or silk bouquets instead of cut flowers
decorate with branches, dried grasses, grains, greens, berries, or live plants (potted or dried arrangements can double as favors)
choose beeswax or soy-based candles over those made with paraffin, a petroleum byproduct
arrange to have decorations moved from the ceremony to the reception (if you opt for separate sites)
use leaves or other natural objects as place cards
throw biodegradable confetti or organic rose petals instead of releasing butterflies
donate the flowers to a hospital or rest home at the end of the day

7. Eat, drink, and be merryShowcase green gustatory pleasures (and spoil your guests) by basing your menu around local, organic, and seasonal foods. Don’t forget the organic wine, beer, and spirits, and the free-trade, shade-grown coffee and tea! Some tips:

Ask the venue's preferred caterers and bakers if they can do your event organically.
Find a local organic restaurant that does off-site catering.
If your wedding won't be complete without a specific type of food, get married when it's in season.
Find a caterer you trust to pick the best seasonal selections (since you may not be able to taste those exact items ahead of time).
Consider vegetarian selections and seek out cruelty-free meats and wild, rather than farmed, fish.
Make sure the venue offers comprehensive recycling facilities, and ideally composting too.
Have your cake decorated with organically grown flowers or other natural materials instead of plastic toppers.
Rent real glassware, dishware, and linens instead of using disposables.
Go for a chic eclectic look by mixing and matching thrift-store plates and dishes (and donating them back when you're done).
Use biodegradable utensils and dishes made out of cornstarch, potatoes, wheat, or sugar cane--if your venue can compost them.
Make arrangements to donate leftover food to a local food bank or homeless shelter.

8. Lasting memoriesWhether you prefer film or digital photographs, look for a photographer who will do digital proofs to save paper and chemicals. Avoid single-use cameras, but ask friends with digi-cams to share their photos with all the guests online in a free Flickr group or Snapfish group room you set up for your wedding.

9. 'Tis better to give...OK, OK, giving and receiving are both great! For your gift registry, consider:
asking for gifts to charity instead of material goods
registering with the I Do Foundation or another site that gives a percentage of gift purchases to your chosen cause
registering with stores that offer local, fair-trade, handmade, organic, or other ecofriendly products like Branch, Gaiam, Greenfeet, GreenSage, Ten Thousand Villages, UncommonGoods, or VivaTerra.
registering for outdoor gear or contributions to an ecofriendly honeymoon
creating a custom wish list of ecofriendly items like a fresh-produce subscription from a local farm, organic gardening supplies, organic linens, park and museum passes, gift certificates to organic restaurants, and subscriptions to green publications or memberships in green causes

For your favors, give something your guests will really use and enjoy, not disposable plastic souvenirs. Some ideas:
gourmet organic chocolates or another organic or local food item
attractive bags of fresh or dried organic herbs
seeds in a commemorative container like this one
reusable cloth tote bags
a small plant
natural soaps
soy or beeswax candles
a compact fluorescent lightbulb
a downloadable playlist of your favorite songs
a small charitable donation in each guest's name
place cards made of seeded paper that can be planted at home

For your helpful, loyal attendants, you'll want to up the ante a little, perhaps with:
gift baskets of organic skin-care products
recycled jewelry, wallets, handbags, or drinking glasses
selections of organic coffees, teas, and chocolates
recycled paper journals and stationery
great bottles of organic wine

10. Happily ever after...Begin your new life with a honeymoon that's light on the Earth. Consider:
going somewhere local (you're going to be spending a lot of time in that hotel room anyway)
engaging in ecotourism, which can be as rugged or luxurious as you want it to be (find listings that suit your style through Conservation International, National Geographic, Planeta.com, or ResponsibleTravel.com)
taking a trip that benefits an environmental group; perhaps boating in Florida's Dry Tortugas, birding in Alaska, or walking the Italian Alps with Sierra Club Outings
skipping the cruise and taking a relaxing, romantic train trip
getting around at your destination by renting bikes or taking public transportation (the better to enjoy the sights instead of arguing about your spouse's driving habits)
staying in a family-run B&B or inn, a luxury teepee or yurt, or a green hotel that's working to save resources and reduce waste
offsetting your trip’s carbon dioxide emissions