antibride's Chocolate wedding

I'm super excited about our Party! I call it our party because it really doesn't qualify as a reception. "Reception" invokes images of champagne and hors d'oeuvres. We going more in the direction of Kegs and nachos. Also, we're not telling anyone that we're getting married until it's already done. That way, guests won't feel pressured to bring us gifts we really don't want anyway.

That said, this is the only "wedding" we're going to have so outside BBQ or not it has to be the best, most elegant, ambient, and enjoyable BBQ anyone has ever been to. There aren't too many resources or ideas out there for this type of event, so I basically have to wing it.

What do the antibride & groom wear to their own I-just-got-married-last-night-and-didn't tell-anyone-party?

UPDATE: I've hired a new florist to do some flowers for us. I feel strange not doing it myself but I won't have time and I'm sure she'll do a far greater job than I could so I'M EXCITED!!!
I want to keep the cost under $500, so I've ordered two large arrangements for the buffet and bar. One in a large rectangular basket and one in a tall galvanized bucket.
I want all the flowers to look at home by the lake so I've asked for Sunflowers, Queen Anne's Lace, blue Delphinium, orange and red Cabbage Roses and various greens and grasses.
For the tables and other vignettes, I bought little square metal containers at the $ store. The florist is transplanting 5" white daisy mums into each with a green ribbon or raffia bow


UPDATE: Our post-wed BBQ was an absolute blast! I'm really glad we did everything the way we did. It was so relaxed and laid back that it made it easy for everyone to have a good time, make new friends and help us celebrate our new life together.