Seriously, the bathroom thing isn’t a big deal. Emergencies are few and far in between - that’s why they are emergencies. Nobody is going to prevent you from leaving the room if you have an emergency (and if it is a problem, you can talk to the professor after class) - but he just doesn’t want people popping up and down all the time. Seriously, adults should be able to hold it for 50-75 minutes barring emergencies.
The rest of the stuff all sounds standard.