Bruce, I think you have a very good idea on what to "expect"....lol
Expect, to leave the bathroom door open so you can holler to others if you need something, because it'll be 2-4 hours before you'll dare to stand for even a single second once the Suprep "hits"! (or leaves, with undeniable urgency in this case)
I had mine at 50. Fortunately, the scope confirmed what most already knew about me...I'm a perfect a-hole, so I got a 5 year clearance till the next one.