Need help with airport strategy

[RoadTripFanatic]

I'm another vote for a car seat bag. I have never had any damage done to my car seat or my booster seats. I just threw mine in a bag and checked it. The other posters are right. They are great for stashing coats, extra stuff that you don't have room for in your suitcase. If you are set against putting the 3 yo in a car seat I would check them. Do you honestly want to drag 2 car seats, double stroller and two small children? I know I wouldn't. Just put the kids in the stroller and go.