No idea. I was assuming it wouldn't go that late since it's starting at 1800, but it varies so much with how early people need to get up in the morning and how sidetracked they get by shiny things. Perhaps you should give me a call before coming over and see how things are going. I tend to be up until at least 0200 even without guests when I'm home alone here, because I am a big stupidhead and play computer games, so don't worry about waking me up with a phone call.