I love Willie, and have been honored to have seen him many times. Most recently (which wasn't all that recent, clearly) we went to Presque Isle, Maine to see him with Ray Price and Merle Haggard. It was a brilliant night!
Afterward, we were concerned that the whole hotel we were in was full of concertgoers, and it was. We were afraid that they would be partying all night long. Not! Apparently everyone was as old as we were, and by 10:00 the whole hotel was in bed - as were we.
I saw Kris Kristofferson a couple of weeks ago. He's still got it!