Have you considered cruising on HAL (Holland America) since they are the PPA cruise line?
All Holland America cruise ships have pickleball. The line features the sport on Rotterdam, Eurodam, Koningsdam, Nieuw Amsterdam, Nieuw Statendam, Noordam, Oosterdam, Volendam, Westerdam, Zaandam and Zuiderdam. Also, Holland America Line has been named the official cruise line of the Professional Pickleball Association (PPA).