@unclewilbur I can't remember if there was an orchestra with them or not but i kind of doubt it although there is a pit at the A&S auditorium. Yes, i heard many of the songs from that album and Yesterday Once More remains my all time favorite of theirs. I remember Karen had a grade school class come on the stage with her while she sang a song but i don't remember which one it was. Similar to my Elvis experience though and being more of an Allman Brothers/Skynyrd/James Gang fan, i hadn't planned on going to see them but my girlfriend begged and once again i was forever grateful. Most of today's female vocalists can only dream of having a voice like that.
As for Elvis i still have the program from that show and he was indeed at his height--i've seen many concerts over the years including Stones, Skynyrd, Dead, CSN&Y, Clapton...but i still think Elvis was the greatest entertainer i ever saw--he put everything he had into that show...i still remember all the women lining up to kiss him and give him their panties and bras...