In my day (Sedburghs and Mk 3s) everybody mucked in and helped, with cadets visiting for AEG being briefed before getting near an aircraft and being monitored for a short time by a staff cadet.
Visiting cadets/staff did not drive retrieve vehicles either, that was done by staff cadets or VGS adult staff; you couldn't just jump into a Landrover and tow a glider, it needed speciallised instruction and an RAF driving licence.