Aeromar is in T2 as well, and I very much doubt that US will interline your bags to them. So you'll most likely need to claim your bags in T1, clear customs, and then walk over to the station for the tram to T2. That's a fair walk, as the station is over on the domestic side of T1 (figure about 15 mins to get there). That tram is a single train shuttle - so it only goes every 15mins. Important: you must have a copy of your receipt/itinerary or a boarding pass with you, otherwise they won't let you on! As Aeromar don't do web check-in yet, make sure you have a copy of your receipt/ticket. Once in T2 you'll be fine. If you have some time to kill, there is a good food court there, good restaurants too, and a little branch of the Museum of Anthropology.