Dude, seriously, maybe it's a gender thing (it's certainly not an age thing, I'm probably younger than Peter is supposed to be here and I learned better pretty quickly), but I don't think having drunken sex is good fun, it's a dangerous behavior that can have nasty consequences). I mean really, 'sow his oats'?
And no, I don't think Peter has been acting the same post OMD as pre OMD.