My daughter and two sons had a very successful trip. Everyone traveled very well. Bedtime was not as pretty of a picture. Apparently my daughter did not like her pack and play. Instead she wanted the human comfort of Mommy and Daddy's arms while standing of course. Since we arrived around midnight we didn't want her waking our neighbors in the adjoining room. Normally we would let her cry it out. She slept comfortably in her car seat. Who knew?
The following night she slept successfully in her pack and play. Maybe the solution is to stick to her regular bedtime while on vacation to make for a happier child.