All of us in my band are in our 60’s.
It is physically harder than it used to be for me. To keep up general fitness, I try to walk every day, usually about 3 miles, but sometimes up to 4. Then maybe once a week my wife and I will do a longer one, up to 7 or 8 miles with a break halfway.
The night before gigs, I’ll not have much alcohol, and try to get an early night. On the day of the gig, we all try to give ourselves plenty of time to get there and set up without rushing around, it’s important to feel relaxed before we play. Obviously, lightweight gear helps too.
I tend to practice for an hour or two every evening, and will focus on the band numbers in the run up to gigs and rehearsals.
Rob