We take a short segment (maybe 10 miles) of the turnpike and get off in Leesburg to visit the in-laws. Before we acquired a Sunpass we simply grabbed an envelope at the unmanned toll plaza and mailed in our $1. You have a week or 10days, something like that. I don’t see any reason to pay the car rental company to pay your tolls for you. You should make that clear at the counter.