I was at Seaworld last year during the day on NYE. We left and went to Epcot for the evening. I'll tell ya what I noticed. Not that big of crowds. Special entertainment. I think it was a country western star... not sure since that's not my thing. We had a nice lunch at the shark grill, no advance resv. and no special menu. They did have several special fireworks sessions during the evening and into the night. there were also several small stages set up with different entertainment like comedians or jugglers during the day. Hope that helps. It looked like a nice family party and I did notice that the crowds got heavier as the day progressed and there were lines as we were leaving around 3:00 to enter. If you all are animal lovers, don't miss the dog/cat/pet show. It's the greatest thing!