Originally Posted by
encinc
How would National handle them returning the car a week earlier than scheduled? Would they just be charged for the one week or would they be responsible for the full contract?
I think that you should be fine. But perhaps book 2 back to back weeklong reservations for your ILs and see if the rate is the same - you might actually be able to save some money using the $20-35 weekly rental coupons that are out there - this way there would be no question about early return (just cancel the 2nd one if not needed). You'd waste a little bit of time swapping cars/contracts.