What do you use for a toddler/preschooler when you travel? Wagon Jr. is too big for a pack n play, and the place we're going has twin sized beds, but I don't think they have bed rails for the beds. Pillows all around don't contain him... he's an active sleeper! The last time we were at a hotel and I slept with him a queen sized bed, he rolled over the pillows on the other side and fell off the bed!

Everything I'm seeing on Amazon is 43 inches long... too long for our luggage!