  Here's an idea for that pool party: if we were to have a pool party at night, it would probably be best to have a sleep-over because I have a feeling that my parents, at least, would be somewhat less than willing to pick me up at someone's house at whatever it may be, 2 AM or whatever. So, as I said, if it were a sleep-over it could go as late as we wanted without any worries. Just an idea. 
