The meet 'n' greet is in Innoventions West, between the fire safety and Segway exhibits. There's a sign on the wall, a roped off line, and curtains near the line, but not much else to identify it. I had to ask a CM the first time I went. I was there a couple weeks ago (went twice) and there were quite a few people that lined up that did not realize what they were in line for (they were not Disney Visa card holders)! Both afternoons, I saw Mickey and Pluto. I had to wait between 15-30 minutes. One day there were about 8-10 families ahead of me, and the other there were 4-5.