First of all, notice in green that today's puzzle includes YOYO at 6-Down. And you all thought I was making it up yesterday, huh, but here we have YESTERDAY'S ANSWER IN TODAY'S PAPER. HA!
Directly opposite YOYO is NOON, at 55-Down, and slightly to the left of NOON is DATE. Is there a date somewhere in this puzzle? Oh, yes, there is:
ONE/23 is TODAY!
So clearly this meta is telling us to be prepared for an event at NOON TODAY. Perhaps we'll have to raid a meeting at location nine.... Or, if we're lucky, there will be PIES.
