Morning Derek.
As said above I don’t think age is as much relevant as fitness, I was 68 when I had my surgery & my surgeon seemed to imply that stomach size or being overweight was the negative to robotic surgery.
Like you I am fairly fit for my age & run 3 to 4 miles a day. Regarding your question about recovery & time scales getting back to your activities it’s not recommended to overdo it initially, i gave it the full 6 weeks “as stated by my surgeon” before I started running again.
I started steady walking 2 days after surgery just around my village then extending my walk by the week up to my 5 mile a day by the 6th week until I started running again.
I cannot comment on the radiation treatment, I think you would probably have around 30 sessions on every weekday so up to about a month of treatment, wether you could, or feel like playing walking football in that time I couldn’t say but I’m sure someone else could advise you on that.
All the best on whichever treatment you decide.
Jeff.