We rented a car last year and ended up getting car seats for free. I think the rental company was Enterprise but i'm not really sure. However, I think the lady was just being nice to us since we were horrified at the lack of car/booster seat/seat belt laws in FL. Just an FYI: FL law is children only need to be in car seats until, I believe, age 3 and then seat belts are fine for 4 and 5 year olds and nothing is required after that age by law. Booster seat laws are pretty much non existant. Here in RI and at that time we lived in VA, the booster seat laws are until age 8. So depending on your childs age they'll tell you that you don't need one.