Is there a posted sign? If so go back and read the smjall print. Sometimes they also state can only park once per day. If it does not have that limit then I would fight the ticket. You probably want to bring some sort of proof your left or have a witness testify to that on your behalf.
The parking ticket should provide you with details of how to appeal. Get your evidence in order, a statement from your friend and present it to the parking authority. Good luck.
This answer is for general informational purposes only and shall not constitute legal advice. I have answered a question on a public forum which does not establish any attorney-client relationship. For a more detailed legal analysis you should consult with a legal professional in your area.