We are heading on our first Disney Cruise at the beginning of February. My kids both have birthdays right around the cruise and we are signed up to do the dolphin encounter while down there. I will have an almost 4 year old (she turns 4 the week we get back from our cruise) and a 6 year old (turns 6 the day before we get on the cruise). Do you think their ages are ok? We really wanted to get off the ship and this was one of the only thing that kind of caught our eye. Any help would be appreciated! Thanks!