Last year I completed two, six-week immunotherapy treatments with BCG. Because I'm incontinent I had to remain on a padded table for 90 minutes each time. The table was comfortable and the staff supplied pillows and other amenities to help keep me comfortable. I brought along my iPhone and listened to music or podcasts. The only side effect I experienced was mild fatigue, but it didn't keep me off the golf course (I'm 65 and we do use carts). Insertion and removal of the catheter are nothing to worry about. Minimum discomfort for about ten seconds each time. The folks at Mayo are kind, caring, careful, capable and friendly. If you are not incontinent you'll be allowed to leave after injection of the BCG and instructed to expel it later. BCG is not my favorite form of recreation, but it's nothing to be anxious about. Best wishes for success.