He will be busy fine with the magic band. He doesn't even really need that; just give the CM your name and they'll just look you up and get you on the right bus.
Also, he doesn't have to go get his bags, either. When he gets to the DME desk, he can give his baggage claim checks to them and they'll pull his bags from the carousel and deliver them as if they had yellow tags on them. And before you say that that sounds risky, let me assure you that it's not. DME does that hundreds of times every day, and they been doing it every day since DME started 15 years ago. In fact, that letter he doesn't have actually tells you to do that if you don't use the tags.
Steve