My wife and I have done this with my kiddo, he is 2 years old now, but we traveled with him when he was 1 several times. So our kid is accustomed to sleeping with white noise on in his room, we bring along a travel white noise machine with us to keep that going. We have that going a little louder than we do at home, it helps muffle our sounds/ hallway noise after he goes to sleep. We usually don’t hold him until he is asleep at night, but on vacations we do. Our kid is usually so worn out each night from a day of so much new stuff he sleeps hard to start the night.

If you plan on watching TV, I would suggest turning that on before your baby goes to sleep so that sound is “baked in” to the white noise for them. If the TV has a music channel or a things to do at this hotel/city channel that usually works for us. We also usually turn off any overhead lights and just go with necessary lamps to try and keep the room a little darker.

If your room has a huge bathroom or closet that would be another option of where to setup the pack n’ play so they have a darker/quieter space- that tends to be pretty uncommon though.

I hope something I wrote helps! Have a great trip!