Debit Cards:
§ When renting in the U.S., with proof of a round trip travel ticket (airline, cruise ship or train) at time of rental.
§ For pick-ups in the United States, without proof of roundtrip ticket, debit or check cards are only accepted when returning the vehicle. A credit card in the name of the renter must be presented at the time of pick-up.
Thank you very much! I actually called a lot of the companies directly and they told me the same thing. I am feeling much better now! Thanks for the feedback!
Still stick with Alamo or National. Some of the other rental agencies put a hold on additional funds in your account during, and sometimes for a few days following (until it drops off) your checking account.
Alamo and National simply require proof of return transport, i.e. that you're not a local who's going to drive off with the car and keep it for who knows how long