Where are you flying out of ? We flew out of Philly, they expanded their curbside checklanes last Fall (added 6 - 8 lanes). I always curbside check in Philly. Make sure you have seat assignments. The skycaps can assign seats at curb but not if the plane is overbooked and there are some seats which can only be assigned at the counter 2 hours before the flight. If skycabs can not assign your seat, you can not curb check your luggage. Also, USAIR policy regarding boarding passes is one member of a family can collect for all members as long as they have the same last name. All adults checking luggage will have to show photo ID when checking. We pull up, son gets out of seat, I hand the seat to my husband and he stands in line ( if there is one) while I stand beside car. Skycaps have been great about coming to the car to check my ID as long as they see their tip. This has been an easy system for us...as a matter of fact, I then go into airport with my son and wait for my husband to park car and bring the carry-ons. If you are on same intenary, you must go through security together. I don't know how old your children are but I still used an umbrella stroller with my 4 year old in the airport (and at Disney) and gate checked it. That worked out very well also. BY the way if you have problems getting seat assignments, email me.... I had lots of experience with this last flight and lots of good advice from the DIS boards.