For the short-term purposes of the OP, there's plenty to do in PS for a long weekend/short week for even the most jaded New Yorker. Modernism Week is a fun event, with lots of interesting stuff to do.
We've been going for the last 5 years, and this year are starting to re-do things which we did the first year (Joshua Tree, for instance). More fun, though, are the friends we've started collecting who we get to hang out with. Some are in PS, some are in LA and come in while we're there, others travel with us/in conjunction with us.
Longer term, for a longer commitment, there are some conscious shifts you're going to have to do to down-gauge and slow down if you're making a move. The heat will enervate you...there's no doubt, but we're told you adjust. As with FLL, there is a certain amount of "alcohol fueled" life which you need to come to grips with.