Seaworld has some great coasters and fun shows. Lines were all VERY reasonable. No fast pass required to get on a good ride. We spent 2 days in Seaworld.
Discovery Cove was something I had never heard of before. We really enjoyed that day though. Super chill.
Aquatica was okay. I don't love water parks, but it was a fun couple of hours.
We went to Cocoa beach and Gatorland too. I liked Gatorland more than my family, but they thought it was fun.
My kids have been to Disney 4 times. They both said they liked the Seaworld stuff better.