I consider any activity that involves leaving the house to get to the venue an outdoor activity. So laser tag, acting, driving somewhere are all outdoor activities to me.
Have any of you ever been to a clothing optional beach?
Accidentally, yes. My friend's friend from Brazil wanted to get a closer shot of the Golden Gate Bridge and wandered rapidly down the regular beach. Not knowing much English, she didn't read the CLOTHING OPTIONAL BEYOND THIS POINT sign. My friend and I didn't notice either until we were already in their territory.
A naked water park would be AMAZING!