Actually I recall my trip to Sea World was a highlight of my sixth grade year, albeit many moments are now lost to me. It was a two day trip in which we arrived in like the evening, ate quite a hearty dinner, explored exhibits, then slept in sleeping bags in the manatee exhibit! ...That last part doesn't sound as cool as it did before. But the next day I think they served breakfast while they put on a dolphin show, rode on a few rides, and then went home. Regardless, as long as you're around some good friends then any field trip should be fun.