Throwing this out there in hopes of saving someone the 15 minutes of head-pounding on the keyboard that I went through while trying register my kids under "my trips" on the Safetravels website: Enter your kids' info under your profile first before trying to include them on an actual trip. IMO, the site is poorly setup in this manner as it gives you a pulldown to add a traveler under 18 in your trip but isn't really clear that they must first be in your profile. I'm willing to accept the fact that I'm a technological moron and maybe others haven't struggled with this... but just in case, there it is.