events@debian.org
The events Team coordinates the use of the small amount of shared resources used by organizers of debian presence at events, gives out help and advice in organizing debian presences on request and cares about the Events web pages and (among others) the events wiki pages.
Above mentioned email address may be used to contact the events team directly, but ideally members of the events team should read debian-events-*@lists.debian.org mailinglists. (At the moment the team probably reads debian-events-eu and debian-events-nl - help would be welcome.)