Budget car rental is quite fast. It took less than 5 minutes to go directly to the parking lot and pick up the car.

Avis and Budget provide very poor service with lots of hidden charges. I advise against using them!!!

Renting a car in the US is really convenient. Upon landing, a shuttle bus takes you to the car rental lot. You present your driver's license, international driving permit, and passport, authorize a pre-payment, and they tell you the parking spot. When you find the spot, the car keys are already there waiting for you. Just drive away. Returning the car is even easier. Drive to their parking lot, and an employee uses a device to inspect the car, then provides an invoice. In less than a minute, you're done. We even changed the return location twice during the trip, and they agreed without any hassle. Highly recommended.

I don't understand why I was charged an extra $39.85 at the end.

Car was as promised and suited our needs.

We booked the rental for Boston while in Scotland. The rental process was quick and trouble free. Plus it was cheaper than if we had rented from a US website.