I use the Veteran's Expressway all of the time. I happen to have a SunPass so none of that shit ever happens to me. The posted toll price is just sucked out of my account. It's does auto reload $10.00 everytime my balance gets below $5.00 though.
Fuck it. The SunPass sticker is $4.99 (I think) at Publix and the cost of it is added to your account so it is more or less free. Get one if you think you'll use it again and you can avoid that BS.
