I've never seen a menu from all the places to eat with prices either. I can tell you that the slice of pizza and fries at the pizza place in waterfront area was $6.95 and the soda was around $2. You can get the beef platter from the Smokey Grill for something like $9.99 and I think the platter with 2 meats is either $11.99 or $12.99. Platters include meat, fries, and a roll. I think the slice of cheesecake was $3.95. My husband and I usually get the 2 meat platter and share it. There is plenty for both of us. We did the same for supper with pizza and fries and neither of us went away hungry, but we weren't really very hungry after having the big platter for lunch.
BTW if you are at Sea World on cold day, the hot chocolate was really good.