Sounds like my kind of event!!!! World Wide Knit In Public Day is celebrated from June 12-20th this year. You can find all the details at www.wwkipday.com . I knit in public almost every day, but I haven't done it with a group of folks yet. I'm sure that would be an entirely different experience. Have you ever participated in an event like this?
Also, I missed the Guiness World Record for most people crocheting simultaneously on 6/5/10 at Citi Field in NY. Probably one of the only times I'd go to a baseball game. Did you go? Read about it here: http://www.nydailynews.com/ny_local/2010/06/06/2010-06-06_record_stitched_at_citi_field.html.