Dinner for a crowd

This year, we're spending the holidays with my husband's family. Ten adults and seven kids - from nine to one year - will be crammed into my in-laws' house. That part seems easy now that I've been told I'm going to have to come up with at least one day of meals for the crew. While I love to cook, I'm less than excited about putting together meals for the variety of diets: two kids are dairy-free, an adult is on the South Beach Diet, two others don't eat pork and another few don't do seafood. Then there are the quirky particularities of each family (i.e., my kids will eat grilled broccoli but will not touch it when its steamed). Yeah, it's gonna be fun. My plan is to plug all the preferences into a variety of recipe searches such as Epicurious, Food Network and Recipezaar to see if any recipe meets everyone's restrictions. I'll keep you posted on my progress...feel free to send suggestions.