We are new to using a booster so on our recent trip I couldn't figure out how to get our Parkway to CA without checking it. I wound up getting a Ride Safer Travel Vest for the trip to and from the airport and using another Parkway while we were there (because I don't want him in just the vest for every day use, even on vacation). DS1 is only 5 so I don't want to use a LBB but how in the world do you get a HBB to where you're going?