Huangshanbei to the park

Hello, I am planning a trip for May and I'm arriving at Huangshanbei station at 3:30. I am an experienced hiker and wanted to get into the park on the same day I arrive. However, I've heard the buses into the park stop at 4:30. Is this true? Do you think I will be able to get into the park and stay at a hotel inside or will I have to stay in the city the first night and go to the park the next day? Thanks.