Looks like you are renting so I'll caution that there is VERY important note here ... especially when combined with information on the Sunpass web site wrt using an electronic lane by accident IF not activating the pass FOR SOME RENTAL COMPANIES:
If not enrolled at time of reservation or at the rental counter, and user incurred toll charges by utilizing a dedicated or express lane, a $25.00 administrative fee + toll is assessed for each infraction. These fees and tolls are charged separately after the completion of the rental.
See https://www.sunpass.com/rentalcar for a comparison of fees and penalties of various rental companies which range from $6 per rental period to $36 a week or the penalty noted above . . . differnet companies handle this different so read up for YOUR choice
If you choose to pay cash KEEP TO THE RIGHT on SR 528 and SR-417
As far as the e-tolls go, with National it's $2 per day (max of $6) that an e-toll lane is used plus the tolls. No action is needed to sign up when renting. My understanding is that Alamo and Enterprise are the same way at MCO since they are owned by the same company. Other rental companies have some pretty high fees if you don't sign up when you pick the car up.
I am not quite sure if I should make a blanket statement for everywhere in the world, "Use the manual lanes to pay cash and always get a receipt," after reading a few reports on another (non-Disney) web site regarding toll disputes.
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