When checking in, they didn't provide any information or recommendations for services.
I personally parked my car and didn't know about it, nor did I receive any information or instructions from the registration staff. When I took the car out to run errands, I was charged 100 baht (219 minutes) for scanning. GSA should provide this information at check-in. Customers expect to stay for free, but they don't know they need to get a stamp because they didn't receive the information.