that's it really. I had a day out at a local spa with a couple of friends. it has an open-air hot tub with room for about 6 or 7 people. we were sitting chatting happily - no bubbles, just still water, when 2 women climbed in and turned it onto the volcano setting, 2 or 3 times, no eye contact, or asking us if we minded. it happened later that day with a different couple. I think they were bloody rude, but is that what people do in spas?