Well, is there any chance you can put it off until, say september or october? Gall bladder surgery isn't usually that serious. But if you have to have it done right now, then obviously, do it. I know that gall bladder removal these days is pretty routine,
you pretty much go home the next day and it's a pretty small incision.
I don't know about exercising and gall bladders,but if running brings on attacks and pain, then maybe you could still do easy rides if it doesn't hurt too much. THe best thing is to ask your doctor.
Last year, in March 2004, I had major emergency abdominal surgery and had a pretty sizeable incision. From about my navel to about two inches below. I asked my surgeon at my post-op appointment how long it would be before I could do physical things like ride my bike. She said six weeks from the day of the surgery (fortunately,it was winter when it happened). And sure enough, three weeks after that I was on my bike. THe good thing about cycling is that it's easy to do compared to other things because of how you sit. I didn't resume running for a while because of the impact, and it was several months before I could do situps.
GOod luck with the surgery, I am sure you'll be fine!
You can catch more flies with honey than with vinegar. That's great...if you want to attract vermin.