1. make sure you have a credit card
2.you know the insurance stuff and driving record if you donnot need to show that cool.
3.gas is more expensive with rent a car so beware
4. when returning the car make sure there is gass in it and try to keep it clean inside
5. no smoking you get a better rate and if you have tripple Aaa show that you get a good discount.
6.go on the web see if you can get a better deal with rent a dent car or a regular car.