I found it very convenient to book…
I found it very convenient to book ahead of time and see what it will cost. One idea for improvement - provide clear information about when book-ahead customers can enter and exit garage BEFORE they finalize their reservation. I.e. they have to enter on or after their check-in time, and leave on or before their check-out time. No leeway for arriving a few minutes early. This will allow customers to adjust their entry time according to how confident they are in their time of arrival.