We're going to SeaWorld (San Diego) during Easter break. We've never been before and I'd like to know the "must see" rides and attractions. It's me, DH, DS 9 and DD 7. We all like just about anything and DD is exactly 48" (in case there are height restrictions). Can we fit everything in in one day? Is there anything we can skip? How bad will the crowds be during Easter week? Thanks so much!