Biggest wedding I've been to was about 150 people--that's the average size on one side of my family as we've got about 100 relatives who all socialize with each other. It's nice though because if you want, the relatives will cater your reception
and they're all very good cooks
.
However, they won't all be coming to my wedding (whenever THAT happens). I want a small ceremony on the beach with a large reception. To me the actual ceremony is special, and there are only a few people I would want to be present for it.