Congrats! I was just playing w/ my 16 and 26 wk old. I can never seem to get enough of them. Besides a water bowl, bring along a gallon jug of water to have on hand. What's worked well for all of mine on that first night home was to buy one of those baby bears that play sounds. I got mine in the baby section in Target. It plays music, waves, rain and a heartbeat. I used the heartbeat and never had a problem w/ them sleeping. Even now w/ mine a little older, when I put the rain or waves on, they know it's nap time. This bear's a must for every new puppy owner.
Have a safe trip! I can't wait to see pictures.