We usually deal with Alamo at Sanford which is a little bit a treck if u have all ur luggage and never had any problems with them.
Although same to be said for Dollar, they have always been pretty really good.
We had a wait of about half an hour as a family was from what we can tell, was in the process of being ripped off by getting swamped with upgrades, insurances and pre paid tolls.
As soon as we got to the desk licenses, signatures, done in 5 mins, so cn't complain too much