I did my PPL in Florida (KISM) and in the later stages I did the full planning for a navigation flight to Sarasota, have lunch with a colleague of mine, and fly back. So I called a local FBO, told them I was a student pilot and would not need fuel, just parking for an hour or two, plus apron access. They would not charge me anything for that.
In the end my colleague had left on a business trip so the flight did not happen, but it was good to know that you can just call up an FBO and chat with them about your needs.