Haven't been on the board for a while so sorry if this has already been asked. I've seen some photos of meet and greets but couldn't tell if it was a special event
I vaguely remember recently reading about meet and greet at Hollywood Studios in the old Art of Animation building. Sorry but I can't find the original article but here's a link to Disney's brief overview!
You can meet Chewy and Darth Vader at Hollywood Studios. They are really interactive & great meets! Both lines were between 20-40mins depending of the time of day. Will try and post so,e pics if I get a chance