As a Beatles geek I was very impressed with the attention to detail, both musically (I'm a Beatles geek) and visually. The set pretty much stuck to the hits with the occasional departure. Personally I would've preferred a few more "album tracks" but they've been gigging long enough to know what the crowd wants.
The supporting musicians were fantastic, often multitasking. I particularly liked seeing and hearing how they tackled the Sgt. Pepper's era material.
If you're a Beatles fan you have to see them and that's that.