As far as I could tell, it began today. At the end of the show, the boys said "lets start our vacation", so looks like we will be treated to worst of tomorrow.
The rule of thumb used to be: If Dru Boogie is in, that's the last day before a vacation. Does he still come in?
They haven't done that in a long time. I miss those days. I doubt there will be a show Friday or Tuesday.
Generally when they end a show with things like: "We'll see you guys in a few days" that means the vacation has started.