One thing about most of the meet & greets in World Showcase is that the lines are outside and it's easy for someone to rejoin their party. I'm assuming that the
DAS holder is likely a child in this case. If you have two adults , one can wait in the line while the other walks around or waits somewhere else with the child. Then when the adult waiting in line is getting close to the front, the other adult and child can rejoin the line.