Lucasfilm had every right to stop such a thing, which would've surely brought a lot of money into the bar. It sucks that it was canceled just 2 days before the event, but that's the fault of the organizers for not securing rights beforehand.
I don't think it's fair to claim "if Lucas can't profit, he won't allow it", on a website at least partially dedicated to fanedits and preservations of Star Wars films.