We’ve had several tours with airport drop off. They range from fantastic with quick turnaround through the airport in Miami, to a horrible experience in Buenos Aires. The tour was fine, but all the tour buses (which seemed like half the ship) arrived at the airport at the same time. The LONG line for check in snaked through the airport with many arguments about whether you were in the right line or not. And staff were telling different things to different people, causing even more stress and distress!