I am having professional engagements photos taken this Sunday 5/20. We were planning on starting at 6pm to be able to capture sunset. I now see you close at 6pm. Is there any way we can stay later? Also, what is the charge per person?

Questions on Google are answered by peers, not the actual business. Give Crystal Springs a call for such a specific question. They do rent out their space so it's possible they will accommodate.

Call them to find out details.

I strongly recommend you give them.a.phone call. There is no way to know if any actual employee will read your question here.

I know they request professional photographers register with them before taking photos, so that's also a good reason to call