Who changes diapers?

We want to go on a family cruise but my son is three years old and still not totally potty trained. I would like to pick a cruise line that has youth counselors who change diapers so that he can participate in the kids' program. Which lines change diapers?

[Tammy]

Carnival's Camp Carnival changes diapers.

In addition to Carnival Cruises, there are two other lines whose youth counselors change diapers in their nursery programs -- Disney Cruise Line and on Cunard Line's QE2. While Disney counselors will not change diapers for children in the youth program (three years and older), they will change diapers for infants and toddlers in their Flounder's Reef Nursery. While the youth program is free, there is an hourly change per child in the nursery.
On the QE2, there are professional nannies who change diapers. In fact, the diapers and wipes that are used while your child is in the nursery are provided free of charge. (You just have to bring those supplies for use in cabin, etc.)
Hope this helps.
Luisa Frey Gaynor