How much fun should one have?

I thought I specified this with "as often as you need".

Although, after reading your comment it now occurs to me that it could be possible that others might not know how much fun they need. Is that true?

If so, I recommend you explore having an "unlimited" amount of fun without ceasing for days on end (think cliches of "spring break") until you can naturally feel the inflection point at which adding more hedonistic experiences on top of your current pleasure no longer improves your happiness and you long for "relief from recreation". If I'm remembering correctly, this is how I actually calibrated how much fun I need. Once you know this point, you can more naturally feel the bend of your own hedonistic pleasure curve and keep yourself in a state of content, disciplined happiness or slide yourself up towards bliss or down towards more subdued states depending on what's appropriate for the situation.

What kind of fun should one have?

Sex is indeed the correct answer. In some ways, I feel like a chicken-shit for not finding the right way to say this directly in my article. I guess I didn't want to point out sex as an ideal form of recreation since, based on reading comments here on LW, I perceive it as being relatively scarce among some readers. Now that I think of it, my mind actually estimates it as so low that it effectively rounds it down to zero unless I think it through consciously and realize that it can't possibly be that divergent from any other community. Still, I know the pain of being someone who has had sex before, and then being reminded of how awesome sex is without having an outlet for it at the time, and having it leave me feeling unbelievably miserable. I didn't want to leave even a single person reading my article in a place like that.

[ OTOH, if they're down here reading the comments, sorry about that. ]

I guess normally just avoid mentioning sex to people unless I know they're in an abundant sexual situation in life. This heuristic is probably overkill. How do other people deal with this?