I have heart bypass surgery scheduled for next week, just one bypass in an area where they could not put a stent. The doctor is talking about cardiac rehab following the operation. Does anyone have any idea of how long it will be before I can get back to camping, mostly how long will it be before I can crank the pop up roof, I am 75 if that makes any difference, and my DW has back problems so she can't handle the heavy stuff. We had made campground reservations for June before this health problem came up, do you think we will be able to keep them? Thank you for any information you can give me.