At one point it started to rain while a gentleman was cleaning the pool. See, the hot springs lead to hot water pools where you can soak and relax (get wet). But also next to them is a regular cool-water pool to jump in after all that heating up (another form of getting wet).
But now rain, apparently, is not an allowable form of getting wet. Even when waist deep in the pool one requires an umbrella to stay dry (half getting wet).