paint for shells / Smores
I just took my 5 and 6 yr olds on a 3-day cruise; I would say much of what has been posted here already. In addition, bring lots of kid paints for them to color shells, rocks and drift wood they find on the beach. They loved doing this. Also another big hit was making fun things for dessert then watching the sunset. We did Smores (graham crackers sandwiched around a marshmallow and piece of Hershey's chocolate - wrap in tin foil and place over heat ,stove or grill> for a minute).
Fun routines they look forward to work well....
PS - take them along; they will not ruin anything - only make it all that much better!!