Overall our experience using Dollar Rent A Car in Charlotte was mixed. The service at the rental place, particularly the shuttle driver, Jim Body, was great. We got excellent rates using Orbitz. Our car was very clean and worked great and despite not having their insurance we did not run into any problems when returning the vehicle.
The only thing that went wrong was that when we had to change our pickup date, they changed the daily rates on us to double the price. I had to drive back to the rental lot to switch out cars to get a lower rate, which was a major inconvenience and I still ended up paying more. So watch out for that if you need to change either your pickup date or drop off date.
In working out that problem I had to call several different representatives for Dollar. The first was very rude and unhelpful. However, the other person I talked to, Joey, was very helpful and helped me find the solution to my problem.