I attended the show ($50 seats) and enjoyed it - mostly. I agree that the second act got rather lame and the ending a bust, but the first act was superb. I don't have anything against him drinking on stage, although you're right - it does alter his performance "somewhat." HOWEVER, if I NEVER see that band again I will be forever grateful.
I saw a Hannity appearance on CSPAN2 last month, and he began his appearance with a darkened stage, flickering lights, and his radio show intro before he took the stage. And Rush played his Pretenders bumper theme as he made a surprise appearance at the MRC Dishonor Awards.
If you're going to have a live Metallica-like band, then use it.
-PJ