Hi Stewart....
What everybody else said.
I was 67 when I had my surgery by Lars Svensson a little over two years ago. I turn 70 two weeks from today! By now I'm sure you have figured out their protocol for initial out-of-town interaction. I flew from San Diego - actually, drove up to Los Angeles for the nonstop. I know others from San Diego and elsewhere who did transfers. You will be in a wheelchair at the airports post-surgery – don't fight it, just go with it and enjoy the rides.
I was in the hospital for 8 days (a minor complication unrelated to my heart, but a side effect of the surgery) and left on Day 10 and was sitting at my desk attempting to work on Day 11... and worked from that point on, resting when needed. I stayed in the connected InterContinental, which was a life saver for my wife... just being that close.
CC is a machine, but in a good way. In the end, they'll want to do THEIR tests.
If you are in halfway decent shape, with a good mental attitude, you should sail through. The drugs help mask the worst of it, but in general I do believe most people here will say the bark of the surgery is worse than the bite. Make no mistake - it's a big deal and a huge surgery (I had valve/root/ascending aorta and to my surprise, a single bypass) but within a few months I'd never know anything was done. The 9" scar has pretty much disappeared... or what's left of it isn't anything I think about.
I feel great, and would have responded sooner but was in the Galapagos. And that's my point... this will be a twist in the journey of your life but before you know it you will be back to your old life, just perhaps with a somewhat new outlook on things.
Feel free to ask any questions.
Cheers,
Herb