1. Surrender the bathroom. Just do it. Lincoln is used to sleeping in his own dark room and the first night in a hotel I tried having him in this little alcove with his sound machine and he woke up every two hours. EVERY TWO HOURS! For a baby that wakes up once (after a solid 9 hours of sleep) in a 12 hour stretch each night, it was a nightmare. The second night we opted to put the pack and play in the bathroom and he slept soundly.
This does mean there were a few "try to fit by the pack and play to go to the bathroom before we go to bed" scenarios, but mostly I just brushed my teeth down in the lobby. It was so worth it to have a sleeping baby. Or, you could pee in a diaper over a trashcan. I may or may not have a dear friend who opted for that over the walk to the lobby.