It's not a very long drive, especially since they're being let out around back of the building next to the opera house. It has a fire escape with roof access, after all; a few more of his Riddlemen are already in place on the opera house roof, and when they see the two "stars," they extend a sort of metal bridge over to them - only about two feet wide and lacking handrails, but perfectly sturdy.

He nods to one of the Riddlemen. "Take Meister here, show him where he needs to go. He'll be hijacking the speakers. How long," he continues, turning to address Music Meister this time, "would you say you'll need before you can be ready and in position?" Even with Meister's mind-controlling songs, the Riddler had decided they should make their entrances from different directions, in a sort of pincer maneuver. There was very little chance they'd need it, but it certainly would look properly theatrical, wouldn't it?