You will be able to modify your vehicle license plate up to reservation start time. If the start time has passed you will need to contact Customer Service prior to parking; or make a new reservation and request refund for the old reservation. 



Login to your online profile at www.premiumparking.com. 


Select "Reservations" tab. 


Locate you reservation and click "Edit".


Key in the new vehicle license plate information.


Click "Save".