The meetup.com page says May 9, but I think we'd settled on Sunday rather than Monday. It's a bit late, but I have updated the page on-wiki with May 8 instead. In the future I think it would be a good idea to try to find somewhere closer to central Boston, but we're probably stuck with the same venue for this upcoming meeting. This meetup would probably be a good time to make plans for http://en.wikipedia.org/wiki/Wikipedia:Wiknic, too.
Dominic