Twice a day sometimes... every day it's heated which is that mythical 57 days (May 1st til Oct 1st). And the hot tub too! Are my scales showing?
To be perfectly honest - many don't use them but we do. It's also a social magnet - if it's hot/sunny - the phone rings... and the other end says... "so..... what are you guys doing....."
It has made our house "the" hang out in the summer month(s) and we like that.