I had seen The Watersless Pink Floyd a few times, and they were good, but Roger takes the spectacle and the music up a few levels.

Upon arriving, it appeared that the stage, in the center of the arena, was blocked off into 4 sections, each with a few instruments and microphones set up.   Large walls separated each of these sections.  

Our seats were in the 7th row from the stage in one of these sections, which containing a few guitars and microphones. 

I asked a woman who was part of the stage security about how this is going to work, and she said, "Don't worry, you are going to love those seats."

2 female singers and 2 guitarists walked on to the section of stage is=n front of us, and the show began...

Messages appeared on the walls, which turned out to be gigantic LED screens.  

Roger began singing and playing "Comfortably Numb" from another section we couldn't see. As the music rose, so did the walls, revealing the entire band.  At this point, Roger was facing away from us, singing and playing guitar.  The band did an exceptional job playing both Pink Floyd classics, as well as Water's solo material.  While each of the three guitarists (one was Dave Kilminster, who I had seen in Keith Emerson's band) did a decent job of starting each solo imitating David Gilmour's signature style, they were all talented enough to take the guitar solos soaring.

Waters, at the age of 78, was in great form.  His voice is still very strong, and his performance was outstanding. 

By the way, when the screens lifted, they revealed a fifty-foot walkway on each of the long sides of the stage.  When Roger came our way, he was about 6 feet away.