So yeah, it was. The weather was great, the people were fun, the art was nice. I only sold one T-shirt, but I got a lot of people interested in what I do and flipping through my sketchbooks, which was cool. In all honesty though, I haven't had such extended social contact with so many people on one day for a long time, and I have a feeling I'm still mentally tired from it. But it was a nice experience, certainly. I've uploaded a few sketches and things in my art thread.
Yep, Lambermontmartre is something I'm doing again next summer.