I've posted a few times over the years about how to save money on rental cars. The biggest thing is to look at a couple different sites and don't forget all the various discounts.
Sometimes my company discount is better than AARP, entertainment or the various car company websites. Don't overlook SAMs and Costco, entertainment.com and carrentals.com. Also, a search for rental car discounts sometimes yields a good deal but there is a lot of junk to wade through. Sometimes just calling the company and saying you have this rate from another rental car company and can they match the price works. Whether you actually have the other rate is up to you.
I agree with book and rebook. Check the fine print on cancellations and no shows. It used to there was never a penalty. Some places are starting to charge. 50% savings is not uncommon. About 4-6 weeks out seems to be the sweet spot for rates but there are always last minute rates.
Before people start yipping about no shows, I once waited in line for 40 minutes to cancel a reservation and the booth person said you don't need to do that, it will cancel automatically.
