During my 12 year military career I spent 2 months in winter with the Ullswater Mountain Rescue team. You get to realise how easy it is to die out there and how easy it is to stay alive. Even now, when we go for walks in the wood we take day packs with water , food, waterproofs, clothing and a compass. Now winter is coming in we will take a sleeping bag and a bivvy bag. We are talking 10km walks, not expeditions. But it can go wrong so quickly.
Well you're all going to be fine then.
I'm pretty 'prepared' generally, but I'm not sure I'd take a bivvi bag on a 10k walk in the woods..
Especially if I'm running... Mind you carrying all that would keep me even fitter !!
I could become a marine!!
Joking aside I don't think I'd venture into the Cairngorms in October without some form of proper shelter, even if I wasn't planning on an overnighter.
They say you 'pack your fears'
And I've had it opined on occasion, that I have 'too many' clothes, and too much food, in my pack.
But I hate being cold or hungry
And just now and then I've been able to feed a fellow 'hungry hiker'
This should be the minimum standard; if you can't show evidence of this (or equivalent) training, no entry allowed to National Parks. Simples.
I bet the wildlife would love it though...