You won't have fun if you are borrowing someone's disfunctional equipment. If you don't own good equipment, borrow or rent. These will ensure you can turn, stay safe if you fall and you can move up those hills. If you are snowshoeing, you want ones that are at least medium length so that you don't sink and become a klutz. You also want poles for balance.
Snacks are key.
Also have your water handy so you don't get dehydrated. Indeed our plumbing is different than the male of the species. And if we drink as much as is needed to avoid altitude sickness this creates even more of a problem. Near the tent one digs a hallway through the snow and a nice, discreet pit for privacy. The concept is that you crawl out of your tent and down the hall and have some alone time with the stars overhead without the howling wind and unwelcome observers.