There will be some guidelines, but not as extensive or as stringent as for WordCamps. It will basically boil down to budget transparency, ensuring equal opportunity for members to plan events, and, "Don't be a scammer or a jerk." Waiting to see if anything surprising gets reported by current and hopeful organizers in the survey, but so far it looks like those should cover the problems we've heard about. Before we get to the point of doing the official opt-in, I'll publish the expectations/guidelines, but the above are about what I'm expecting.