No need to get a SunPass. Some of the toll booths are manned- there you just pay cash. Others, they take a picture of your license plate and just mail you a bill.The SunPass does give you a little discount and for the manned toll booths, you can by pass the booth, but for a one time trip just getting a bill in the mail is much easier, and you don't end up with money on your account that you will not use again.