It's' not unusual to see people having extra sessions. They are given as required but are VERY expensive (I think maybe over 1000euro per session). It also screws your sim buddy up as the schedule can take a bashing. When I was there, two people failed the course and left. You also may not get a full pass on the skills test but I don't know the cost implication, if any.
THIS IS IN THE MINORITY HOWEVER
Do get accomodation sorted NOW for CAE. It can be very hard to find. You can try and get student accom at the nearby college. CAE can organise this for you. I think their number is 0031235671671