We are sailing on the Fantasy in late June/early July. We have a large group with various ages and most of us want to do a Dolphin excursion. We stop at Cozumel and Costa Maya and both have Dolphin excursions but we don't know which one to do. Dolphin Discovery is on Cozumel as is Dolphin Encounter at Dolphinaris. Then there is a Dolphin Encounter in Costa Maya. Anyone have any experiences - good or bad - with the dolphin experiences books through DCL?