TBH, you would not want to send a cadet on a week-long ceremonial drill camp where they will be working up to an armed parade unless you know their basic level of foot drill is of an acceptable standard, they have the potential (physically) to succeed and they fully understand what the goal is.
Sending a cadet who is not going to be able to cope with the demands will be disadvantaging those cadets who had a better chance of succeeding but who missed out because of a misplaced sense of fairness.
Everybody has the opportunity to attend if they meet the entry requirements, just like every other camp.
Also, the scale of the camp, as it stands, pretty much rules out having is run as 8 weeks of general camp experience. The place for smaller, more frequent, more basic drill camps is at wing or region.