Pros: Everything! I had requested online and was going to pick up from monterey, CA and return to SFO airport. Plans had changed and I ended up taking to another location but they were just as friendly and cooperative as ever.
Cons: Also, I just needed it for a "day" , so noon to 6pm, but asked about the penalty if it was late, but he mentioned it's for 24 hours so I had until the next day at noon. Obvious, but I would have chosen 2 days if that was the case. Great service altogether!