Has anyone bought tickets on Craigslist? Usually we just buy them from the park, but I'm looking to save a few pennies and possibly not get screwed.

Our roommate just got fired and I'm looking to save a few $$ in case I get stiffed on the rent. Anyhow.. can the park transfer a ticket to my name or tell me if it is valid etc? I really don't know how that all works. Thoughts?