Hey Spaw,
My mother-in-law has had 3 bypass operations. The 3rd one at 77. Nobody told her to stop eating grease... A year and a half later, she's doing great.
I'm sorry to hear you are having to undergo this, but with such a great attitude you have toward life, you'll come through just fine. More good news is that you have plenty of warning about this and won't have to go the ER route.
Wishing you all the best over the next few months, through the surgery and recovery.
Emily