My advice (as a former travel agent), having taken my 3-month-old daughter and am scheduled on one next month with my now 28-year-old daughter, her husband, 3-year-old and 1-year-old: Do your research in advance and come prepared! I have already reserved rental cars in every port so we can go where we want when. We have cabins in the Harbor section of Carnival's Horizon, largely chosen for the lounge area, which provides extra space for the kiddos, as well as snacks (and better coffee than anywhere else on the ship :-). I've read good reviews of the Camp, which hopefully the 3-year-old will enjoy on sea days, so we'll only have to chaperone the 1-year-old (between 3 adults, how hard can that be? ;-). We also have trained our children to behave (unfortunately, unlike some), but there's always the possibility of a tantrum, in which case we remove the child from the situation until s/he's calmed down (and to avoid inconveniencing others). Bring lots of quarters for the laundry, since otherwise you'll have to wait in long lines at the front desk. Hope this helps!