I have great admiration for anyone who can manage to take a holiday, let alone a cruise, with a baby.Just in case you should give a cruise another look, keep in mind that you do not need to order special baby food. So many choices on board that can be chopped up or mashed for your grandchild. Plenty of milk/juice/water available.
We were hoping to cruise with our daughter, son in law and their 15 month old baby this May but paying full adult price for a baby of that age in a pack and play seemed prohibitive. As an active toddler we couldn't see him settling in a tiny pack away cot.
We understood that baby food could be ordered from RCI prior to the cruise if necessary.
Many vacations provide reduced fares for babies/toddlers, but so far we haven't found cruising to be cheap with children as they count as a full fare paying passenger. Yes, I do understand that a baby could be just as hard work as an adult for cabin stewards, but we are very low maintenance ourselves and keep our cabin very tidy, and this would be the same if we brought our grandson. Sadly not all parents are so considerate, as we've seen as we walk past open doors of cabins! And many of those cabins which look as if a bombs hit them are occupied by adults only, so I pity their poor steward.
We wonder how so many families can afford to bring so many kids.
Assume in a hotel grandchild would have to sleep in a pack-and-play, or older child in a bed or sofa sleeper.
Definitely would need to bring diapers, sippy cups, wipes, meds, as they are expensive, if available, on board.
I think many families take advantage of the special pricing and frequent sales.