Waldo, I am glad you brought this up.
Per Waldo's suggestion, yes, not connecting to night drainage is an option. It is somewhat frowned upon in the ostomy nurse world for a few reasons. Many foks don't take enough fluids, during the day, and if they cut back early in the night, there is a possiblity of getting dehydrated. Yet, it is still a good option for some that find the tubing and night drainage bag difficult or cumbersome, and I also offer that when someone is having issues .
The negatives to not connecting to night drainage are having to get up at night, potential for a ballooning of the pouch, leakage from being over full, or rolling on it and wet bed if you don't awaken to empty, potential reflux of urine to the stoma and any skin not covered, potential reflux into the conduit. Many folks make huge amounts of urine at night; for them it may be difficult to get up 1-2 times/night to empty, and have difficulty falling back to sleep.
Having said all of the above, I would also say that I have not seen actual research that proves there is substantial reflux to go back to the stoma, nor if there is enough reflux to cause issues with the stoma or peristomal skin; most pouches for urostomies have anti-reflux valves. Unless it is grossly full, it may not be an issue. It is a theory that is taught to ostomy nurses in their schooling. If there is new reasearch on this, I am not aware of it.