My family doesn't really have reunions (there are like 4 of us, total). Or maybe they do, but they know that I would make up any excuse to get out of going to them so they just stopped inviting me. That is more than likely the case.
Also, they have a margarita machine and a pool (not that I am about to go parading around in my bathing suit in front of people), so the kids are occupied. Every year they make t-shirts for everyone to put on. 2007 they were yellow (see above). And last year they were blue: