We are going on a 5 night Magic cruise in the bahamas with a 2.5 year old and almost 5 year old. How many which excursions should we do: - for Key West, I was looking at the glass bottom boat or the butterfly conservatory. Would you recommend these or should we not do an excursion? Can we just get off the boat and walk around? - For Nassau - I was thinking of the Atlantis Beach Day /Aquarium. Is that worth doing or should we skip Nassau all together. For many excursions they say for all ages but don't list a price if you are under 3. Does that mean m 2 year old is free? Thanks much!