We were at MGM this past Fri. for ESPN weekend and the park was somewhat crowded, but it wasn't crazy and we were able to go on the rides that we wanted to without problem. Just past RockNRoller Coaster there was a parking lot area opened with exhibits and games to play and there were a lot of people there, and the other events were spread around the park so I think the crowds were dispersed. If they do somethng similar like this for Star Wars Weekend, it may not be bad.