Love that quote from that concert, and I love the listening to that entire show.
The Memphis '74 show was special -- obviously, as it included a Grammy-winning performance. (By the way, aside from the officially released show, there is also Hello Memphis.) The '75 show I probably enjoy even more, and think his voice was actually stronger then, including on How Great Thou Art. But this '76 show is my favorite of the bunch.
I haven't listened to it in some time now but it had a very nice setlist with many great performances. One special for that night was the usually Vegas-only Softly, As I Leave You, which his hometown crowd with memories of their young rockabilly hero seemed to really appreciate.
His voice wasn't perfect but the it was still a very spirited and enjoyable performance that he gave.
I had enjoyed this CD previously but it gained extra favor with me after listening to it one night on the way home from Memphis in August 2002. My wife and sister-in-law were with me but they were sleeping and I was driving and listening to that CD, and I felt like I was there. The great sound on the CD (for a soundboard) probably helped that.
If you'll pardon the random remembrance, I believe Elvis said hello to Gary Pepper in the crowd that night, didn't he?
Anyway, again, Elvis wasn't in top form that night, but to me there is something special about the show. It was as if it was a goodbye (not consciously) to his hometown...I say that remembering that he told the crowd he had been sick but it was "nothing serious" and he was in good health once again, which is sad. But what I mean is that it stands as an appropriate goodbye.
What he told the crowd as you said, GH19, and the performance that followed of That's All Right were indeed that. Thanks for highlighting this concert!
EDIT: moved link location