How to park at Hilton for free?

Guests staying in the hotel are free. All parking lots in Hilton Hotel use electronic billing system. Moreover, for the guests staying at Hilton Hotel, their parking fees are free. If the parking guest checks into the hotel, the front desk staff will get the guest's license plate number when checking in at the front desk, and input this number into the electronic vehicle billing system. Guests leave the hotel and leave the parking lot without any charge, but for those who are not staying in the hotel. The electronic billing system will charge by the hour, and after taking the guests out of the parking lot, they need to scan the code to pay.