We fly USAir from PIT and always use curbside both ways with e-tickets, no problem. There is usually not a line at curbside at MCO. PIT can be long, but so is the line inside. We prefer curbside because we check the luggage first and then park the car at PIT or return the rental car at MCO. We did use the kiosk to get our boarding passes, you get 1,000 extra dividend miles the first time you use it, 50 thereafter.