An inside cabin is going to be the darkest of course, but the draperies do a good job of darkening an outside cabin during daylight hours. The days are going to be longer in Alaska. If your toddler is going to be sleeping in a pack-n-play you can drape a folded sheet over the sides to create a visual, and darkening, barrier. Try letting your daughter fall asleep with a little background noise, music or the TV. You can then increase the volume on the TV a bit after she is asleep. A small flashlight for moving about the cabin, or reading can come in handy too.