I have never done this at HS. But in November my brother dropped me off in AK and a friend picked me up several hours later. We told the people at the gate/booth at the park entrance i just wanted to be dropped off and they let my brother drive in on the taxi line. My friend said she was picking me up and did the same they didn't have to pay just followed the taxi traffic. I would assume they would do the same at HS. Hope this helps, good luck!