can only add
If you are using your car, make sure you leave it in a safe place,
Make sure you lock the door
Keep your key safe
If you need to pay for parking, make sure you do
Nothing worse than getting back and finding you no longer have a car.
Make sure you have a comfortable pair of boots, just in case you no longer have a car
Sounds like a painful story in that post
I would say keep your keys safe or use a hazel wand whittled to a hook to retrieve your keys from a grid...
If heading to a plush local well stocked wood haunt, you never have enough beer, you will have more than enough food and friends.
One sharp is never enough but more than one is too many.
Plush woods trips aside further trips out will see you having a quiet word with your self on several occasions but that's OK
You should drink more brews or water than you think.
Pay attention to your footing in woodland. Especially in snow as a torn ligament in the ankle takes a long, long time to heal.
Get organized and find your ryhtm. Everything in its place. Different colored drybags of different sizes is a must.
Add a layer before you need it.
Protect your hands. Gloves will not only save you splinters but also keep your hands safe and clean. Reducing water consumption for washing not to mention injury.
Find your head-torch well before its gets dark.
Have all your admin sorted before it gets dark so you can enjoy the evening.
If your surroundings are new then take time to test your setup before you need it. Small adjustments are much easier to do in the light.
Keep day time outer clothes away from your sleeping space. Harvest mites can be a nightmare not to mention ticks.