Hey, as an adult, I could get by shaving only 2 to 3 days per week. Never-the-less, I preserver and shave daily. I probably wouldn't need to shave all all if I hadn't joined the USCG. They made everybody shave every day whether we needed to or not.
As far as products go, I would get stuff that is easy to store: a Simpson Wee Scot brush, Speick or Arko or some other type of shaving stick, and an expensive TTO razor like a Feather or a Parker along with some Derby blades. If I had a little extra cash, I would add an after shave balm like Nivea sensitive skin. The shaving sticks are easy to apply, and the Wee Scot will whip it into a great face lather. A TTO razor is one piece, so you won't lose any pieces by accident. This stuff can all be stored in tight space, yet performs wonderfully. Oh, Kiss My Face, Proraso, Tabac and others have nice tubes of cream that work pretty well too if you prefer creams.
Wishing I was back on the AT.