I agree that you should check out the showtimes and plan your day around them leaving time to do Manta,Kraken,Journey to Atlantis,Wild Arctic,the Sky tower and especially the Antarctica ride which will open in May and have long waits.Aside from the main shows there's also the Turtle Trek 3-D show which is continuous so it has no show times.There are also the walk through attractions like Sharks which won't take too long to do but you also have to consider if the park closes early.