For the adults, maybe do a little wine tasting or have a couple of wine/cheese pairings? Doesn't have to be expensive...you could even do a blind taste and let people guess which bottle is the cheapest, which costs the most, etc. If you're worried about having some less lively guests, you might consider doing assigned seating with place cards so you can disperse your talkative guests evenly and seat people strategically. For a fun little favor/conversation starter, you could make some of those paper fortune tellers we used to do in grade school (like this one: http://images.melissaesplin.com/wp-c...e-teller-2.jpg) and put one at each place setting. That would give people something fun/silly to play with and talk about. Fortune cookies are also fun, because the fortunes give people something to talk about.
For games, you can't go wrong with Celebrity, Scrabble, etc. We like a game called Wise and Otherwise (http://www.amazon.com/WISE-AND-OTHER.../dp/B00000GBQL). It's great for groups of adults (and you can still have a conversation going while you play), but it's a bit pricey on Amazon right now.
Sounds like a fun party! Have a great time!
Mom to J 6/25/08 and M 6/21/11