I'm sure they have similar policies as the PBH ...
When we were at the PBH last summer, the latest they would give me was 1:00 PM, I offered to pay half a day to stay until 5:00 PM, and the person I was speaking with said they usually only give until 3:00 PM even if you pay half a day, but they checked with their manager and they okayed 5:00 PM for another half a day payment.