hmmm. . . when I was there a couple weeks ago, there weren't any of these. Are they reserved for busy days?
Case in point - we were told the characters were finishing a set and we could not get in line but to come back at whatever time the next set was going to start. We then rode the Great Movie Ride, got a box of popcorn and looked for the approximate spot where Donald and Daisy (they were appearing together) would be. We saw the photopass photographer and asked him where we should wait since the characters were due any second, and he approximated a spot where it turned out another couple was already waiting and before you knew it, there were about 8 to 10 people queued up waiting for the characters before they came out . . . no ropes, cones or anything else. And it seemed to work fine.