I expect the whirlpool tubs to be replaced with soaker tubs, as they have been ever since BCV’s hard-good refurb in 2016. The whirlpool tubs are just too difficult and take too much time to clean when you have to do it every few days as guests check out and new guests check in. I don’t think Housekeeping can reliably tell whether the tub has been used or not. I’ve also read enough reports of gosh-awful gunk coming out when guests do use them to believe that they don’t get cleaned enough. Soaker tubs don’t have any such problems. I’m not sure about the bubbler tubs that some resorts have gotten, which would be another possibility.