Aaaaaargh - The Puffin Club!
That film's from about end Jul - early Aug, I would guess. Several of the guys in the film were still there when I pitched up in the middle of Sep.
Had travelled in civvies from the UK and got off the Timmy, found my kit and straight onto an Eric, only to be deposited in a filthy wet bog 20 mins later. Then up the hill and into the murk in a muddy BV - my chinos and brown brogues were never the same again!
Most of the skids had names, like the one in the film. Mine didn't, so I christened it Dunbonkin - and it still had the name on it when I went back on a short visit 6 years later.
The bit about preferring to stay on the mountain was very common. I hated MPA, which I thought was a cold, soulless, unfriendly, self-absorbed nest of utter nobs. I went to Byron for my R&R.