I was just on KCH website. It looks like they will do a live feed of the red carpet this Sunday at 6:00pm eastern on Facebook. Probably on the John F. Kennedy Center of Performing Arts facebook page.
I wonder if the guys will show up on the red carpet. I would guess so since they are honorees.
Here's the Kennedy Center facebook page.
https://www.facebook.com/KennedyCenter/?fref=ts