I just went online to make a Hertz reservation at MCO. Among the items in my reservation was a "privilege fee" of almost $20 (in addition to the $10 mandatory bus fee). Explanation - a fee charged by the airport if you are arriving by plane within 48 hours. Luckily I am coming from a local off-site location so I don't need to pay this time. But I am very concerned about all the fee being imposed by car rental companies as "pass through" of fees from the airport.