Just want to assure you that you can definately have someone help you get through security and wait at the gate until your plane takes off. I have done it dozens of times with my brood at at least 4 airports that I can think of off the top of my head. When you are checking luggage, just ask for a gate pass for your helper. They will need to show id and then they will get what looks like a boarding pass and can go through security with you. You will likely need another adult to get through security as you will have to break down the stroller and put it on the belt while keeping track of 2.5 toddlers. If you can't bring another adult, practice with your kids at home, making it a game that you time (the 6 year old is going to have to step up to the plate here) using the couch as a fake scanner. Getting through security is an art with a pile of kids and one adult. It can be done but it take lots of practice! Its way better to ask someone to come to the airport and help you.