I had a lot of fun on Sunday, I think it worked out well. It was great to see more of the local crowd and staff in person again.
To echo William's comment, the OTRS business card would be a good idea, for the people who walk up with a legitimate problem.
I didn't have a lot of people stop by and talk who didn't know how to edit, but I did have several who knew technically how to edit who felt that getting involved enough in the culture online to contribute and have changes stick was a big deal. Too much barrier to entry, practically. I have heard this comment online before as well. Something to think about moving forwards.
Don't forget about Recent Changes next weekend, if you're local and interested!