I'll probably be renting a large car or van from Thrifty in late May through early June. What's the best program to credit the rental to at that time?
Unless you are planning to use them on a regular / semi -regular basis and the rewards are something you desire, I might opt to credit my FF program.
with the exception of periodic promo deals with Southwest, I've found Thrifty's airline mileage credits awards to be pretty lame. I rent from them fairly often, so just I choose Thrifty's own Blue Chip Frequent Renter program. The unrestricted free day vouchers add up fairly quickly. Of course, I usually use an airline credit card....