THere are tubs in all rubs except handicap. I think the chances of getting one, are very slim. Just say no. They are kept for those you need it, and seeing as there are not 100's of them, It was be surprising, but not impossible.. I would not worry.
In the handicap room there is a chair they can sit on and you shower them but no tub. We ended up in a handicap room on our first cruise and the bathing time did not go well with my 2 1/2 year old, she hated the shower!
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