you can pull up account activity on the app. When you get to a computer you can pull up and
print your account activity .... therefore if Thrifty tries to mess with you, you have documentation; it shows every toll paid with time. The app also shows 'balance remaining' and this number is near "real time". while I don't watch it while driving, by the time I get home my balance is accurate .... home meaning to the house off the highway ... 20 minutes maybe.
This is why it is CRITICAL you get the tag in the system ... and get the $20 version NOT the $5 one.
Order the SUNPASS online and set up your account b4 you come to FL. And load the app to your phone pad whatever. With the app I can add a tag to my account (rental) in about 90 seconds.
I would warn that Dollar / Thrify have the WORST fees for this in FL ... the WORST fees if there is a boo boo. National
Alamo Enterprise charge a fraction of what dollar thrifty does
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p.s. I've loaned my transponder to friends to use in their pers'nl cars, and rentals and no one has had a problem. I've also just added a visitor's tag to my account and not even bothered to give 'em the transponder and they TOO had no problem just zipping thru the SUNPASS lanes. All their tolls showed up on my account.
say what ya want about SUNPASS, but IME it works as advertised and then some.