You will need navigation skills as there are no trails to follow. Carry a map and compass. If you are going into terrain where avalanche is a possibility, everyone in the party should have an avalanche beacon tuned to the same frequency, and know how to use them. If it's your first time, camp close enough to the car that you can retreat if necessary. Leave emergency clothing and food in the car in case of unexpected highway delays.
Cooking is a challenge.
Fruit will freeze. Don't diet, since you need plenty of food to keep going as cold temperatures will quickly eat up your energy. Working with stoves can be a challenge. White-gas stoves work best in cold weather. Water bottles will freeze unless you keep them inside.