Craig - let me just add that I was diagnosed with transcell carcinoma six weeks ago and after two transurethral resections, the tumor was removed with no evidence of any residual cancer; I start BCG in the next week or two myself. I am 64 so I know exactly how you felt - when first told I had a mass in my bladder, my reaction was "of all the organs that would do me in, my bladder was last on the list, behind my heart, stomach, liver...."
But the good news, as Sara Anne indicated, is that bladder cancer is indeed eminently treatable, you just have to stay on top of it. It is more like a chronic condition that with proper treatment is very unlikely to kill you.
Needless to say, I wish you the best of luck. Of course, if are only a few doses left of BCG owing to a shortage, I may have to arm wrestle you for them....but hmmmm, you would win that hands down, so I better start pumping iron NOW just to be ready lol!!