D.P.
R.,
With all due respect--are you KIDDING? I would never give a "sleeping aide" to a child for my own convenience! Just try to take familiar objects and keep her routine the same as much as you can. We have been vacationing via car to the shore since my son was 6 mos old (he is now 5) and we are flying this year to Myrtle Beach. A dvd player is a lot of help keeping them focused on something except the car ride. Favorite animals, book, pillow etc should also help. Have fun on your vacation!