Hey Irishman - I recommend you ask questions similar to what you did for your surgery. What happens? What are the side effects? How long does it take? Will it cure me? What are the odds? Any pain involved?
Are you doing an IMRT? I recommend that you accept nothing less. Intensity Modulated Radiation Therapy. There is also a more advanced Image Guided IMRT, but it may, or may not be available where you live.
Most of us tolerate radiation well. Some better than others, of course. If you have questions, I'll be glad to respond. My radiation was primary, so I have no knowledge about treatment after surgery.