We love LGB ~ but a word of warning - I traveled once with our Britax Marathon and never again, it's a beast. DD's travel seat is the Cosco Scenera ~ cheap, light weight, great traval/2nd seat. It only holds up to 40 lbs but I figure once DD reaches that weight/or is too tall for it (which will probably happen 1st) I'll just gate check a backless booster for her. When we got to DLR we stay at DLR so she's only in a vehicle from LGB to our hotel and back again. Have a great time!