Hi Mad:
Most of the people on this site that have had their bladders removed seem to be able to get back to a fairly normal life but it takes time and that will depend on the extent of the surgery and the type of diversion chosen. A person has to be careful not to do too much too soon post surgery and that includes the surgery to remove the tumours (TURBT).
For most people post surgery the recipe for recovery is rest, and short walks increasing the frequency and distance as you are able. Eating as well as you can to build back up post op and drinking lots of fluid to keep the urine diluted and flowing which helps reduce the risk of infection and helps prevent constipation. You may experience some fatigue post TURBT and will definitely do so if your bladder is removed but again, it is only temporary while you recover. If you do your best and not do too much too soon it will help in avoiding setbacks.
I suggest hold off on thinking that bladder removal is your fate until you actually know for sure and do your best focussing on being in the best shape possible for the upcoming TURBT (tumour removal surgery). If it does turn out that your bladder has to be removed many people on this site can walk you through the learning curve that goes with this territory.
The waiting at the beginning of this journey is I think, the hardest part. The wondering and not knowing our path with this and of course our imagination tends to go into overdrive with the “what ifs”. Hang in there….we are with you. ((((HUGS))))