We're planning our first trip with our toddler and our baby. We haven't been anywhere since my older son was barely 2-years old, and now he's nearly 3. He still sleeps in a crib at home, but I'm worried he won't be comfortable in a pack and play. Thoughts? Where do you put your 3-year old to sleep when you travel? I'm especially concerned since we may end up having travel with 2 pack and plays...

Thank you!