Based on experienced i have over last 2 years renting out my cars, i would say "Real Curbside" is impossible. Why?
Curbside kinds of like “Passenger pick-up” thing which means at both mine and your side, we have to manage exact time in minutes to meet at Passenger pick-up level and then go. Otherwise, there is a Security employee always standing there and push any car to leave if parks longer than 2 minutes, it is not including Flight delays, Baggage delays etc. .
Because of that, I will change the Pick-up policy that I will not charge $20 delivery fee the car to Airport, instead you are responsible for the parking fee. I will drop off the car sometimes on the day the car is booked at Denver Airport parking lot, the walking distance is very close (not even 2 minutes) from exit window. Lots of my previous customer preferred this way as they don’t have to rush for baggage or else things.
Parking fee is $4/ an hour, up to Maximum $25/ a day ( you will never pay more than $25). Returning process is kind of the same and parking fee is on me, of course 😊.
Easy for you, easy for me.