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The last cruise I was on refilled the spas twice a day with filtered sea water.
honestly their were 3 or 4 on the ship but always filled with young kids we shyed away from them. how would you maintain tubs with constant use including young kids?
I've found in the past that trips around our anniversary are pretty much kid free . Spring Breaks are over and everyone is pretty much buckling down for the remainder of the school year. Plus many people are done with their winter vacations and not ready for the summer one yet. I'm hoping anyway.
Good for you. This way, when you go out to the hot tub you won't have any of those pesky 21 yr old college girls hanging out in their skimpy bikinis.