Just another comment in addition to Ms. Knowltons' remarks. The Air Terminals have planty of available WCs, IF one does not mind a long wait,
however in our experience Princess, Celebrity and
RCInt'l have only a limited amount of wheelchairs available on Board.
To my great surprise the Nordic Empress, for example, had 46 HP persons on board (last year cruise to Bermuda) and they certainly would not have that many WCs to provide. The same for Princess, it is a popular Line in accessibility
for HP people. Wife and I always take her own WC
and so far it works perfectly.