Budget staff at Seattle airport uses some manipulative tactics. First, they ask about the number of people and luggage, then tell you that the car you booked is not available and suggest you upgrade for double the price. After refusing, the staff claim the price includes full insurance and advise you to sign electronically to save time. If you trust them, you may fall for it, as I discovered the next day that they had added duplicate insurance, which cost almost as much as the car rental.

We waited for almost 2 hours to rent the car, even though there weren't too many people.

Had to wait in line for over half an hour.

Constantly pushing me to buy insurance and charging various fees

Budget rented us a car with 3/8 tank of gas. We ask that be noted and they did. When we returned the car had over a half tank. They charged us for refueling and the gas itself over $120. We are of course disputing that overcharge with them.