I wish I could tell you, however the tub in our room on opening week did not work. I normally would prefer a non-jetted tub anyways for reasons of cleanliness (I wonder about the water from previous uses sitting in the plumbing), but there are instructions on the Riviera tub that indicate a self-cleaning function. I was curious to see how that works. Maybe next time. I reported the issue to a cast member upon checkout, so hopefully it has been fixed.