The security guard said there was a $10 "donation". They were not making it optional. If you were in costume, the "donation" was $5.
There was nothing about this on the poster or on the home page of their web site, so I was pretty pissed. So instead of going in, I played SF tourist.
I suppose I should send a note to the City, since "donation" means you don't have large security professionals there to make sure people pay. And I'm sure the City would not have told them to call it a donation if it was a required payment.
But there was a silver lining. I got in a lot of walking, and got this lovely shot at the farmer's market on (of course) Market Street:
So, did these people work for Wendy's?