Some require input at reception which can often be unmanned, just saunter up and put your number plate in, some do not, some require payment by app. This applies to all hotels, I check in advance using hotel website and or ask the punter/client for information. When I arrive just as when parking anywhere I check signage in the car park. Hotels can change policies, I ended up with a ticket many years ago, a hotel changed policy without updating signs. Trip advisor revealed many visitors caught out hotel guests, fitness facility, restaurant and bar users. Next time I visited the signs were larger.