Great experience.

It's okay. After getting the order, you'll be directed to the car's location. The key is already in the car. If the gate guard checks the vehicle and finds no issues, you can leave directly. A friendly tip: don't rent an electric car. If you arrive at the airport with a fully charged electric car, there will be an additional charge. I was charged an extra ten dollars.

Wait at counter was ages

The only problem we encountered was payment of tolls. I travelled through a number of states and it appears each state has its own system. I tried online and by phone but being a EU citizen with a non-US registered VISA credit card - there was no easy way to pay tolls. This meant that Dollar billed me twice afterwards with admin fees etc. I discovered after renting there is a toll sensor unit you can get for the windscreen for rental cars but the desk agent at Dollar did not inform me. Not great customer service in this case.

Like: Car was very clean and functioned well during the entire two week rental period.

Like: every aspect of the rental process
Dislike: nothing