They're probably waiting for people to show up, because they are way behind schedule:
12:30 - Intro: Tucker Carlson
12:40 - National Anthem: Matt Colvin
12:50 - Invocation: Barb Davis White
12:55 - Howard Phillips
As energized as our base is, I highly doubt people are dragging their feet on getting there. You must be thinking of the RNC convention.
More likely they just started letting people in the door or they aren't able to process people into the building fast enough.
The GOP kidnapped Ron. John McCain was murdered by Jesse Ventura and they need Ron to be their candidate.