My wife and I are planning our first threesome with a friend

My wife and I are planning our first threesome with a friend of mine. I've known him my entire life and she has met him a few times and hit it off with well enough. We talked about it a lot. There will be some guy-on-guy stuff that we are all looking forward to. Basically, hands and oral. We have a game plan down of when it's happening. he's coming to visit for a weekend from about 14 hours away for a weekend event. The only things I'm hung up on is how to initiate it, and what to have on in the background. Any advice? We will be at our house and we are going to come back from the first day of the event and all go shower. From there I think we would watch a movie and leave it playing in the background.