Britt Marie,
You can do both: work for the Mouse and live at the Fort - but the two are not connected in any way.
My daughter was a CM briefly and I learned a little about how that side works. Cast Members can get a discount on a Fort campsite up to 40% as tltay2005 says. But
- it's not automatically applicable to EVERY reservation a CM makes
- the number of sites available with a CM discount is limited
- the limit applies per SITE TYPE (some times Preferred, Premium, or Tent have a discount as an example but if you wait too long only Tent may be left).
- you can't make a CM reservation with a discount until you have access to the CM computer system (check schedules, request vacation, view current CM discounts etc.)
- you can't get access to the CM computer system until you have gone through the WDW New Hire training and officially earned your ears (and nametag). So the likelihood of getting an immediate discount is lower if you are looking for one soon thereafter.
People do long stays at the Fort by booking consecutive 30-day reservations back-to-back. If those reservations are at the same level, you don't have to move (but I guess you still have to check in each time which can be done on-line now). Once you start working at WDW and can book out far enough to get back-to-back reservations with a CM discount, then you've got it rolling.
But there is no trading work for a site like there is in some CoE or state park campgrounds.
Bama Ed
PS - I have done some analysis the last few years when Disney releases the next year's rates during the summer. For 2019, average monthly rack rates per site type
with tax were announced as follows:
Tent - $3,057 per month before any discount
Full - $3,933 per month before any discount
Preferred - $4,383 per month before any discount
Premium - 4,667 per month before any discount
That is based on the rates for 2019 that were announced in summer 2018. I suspect Disney might have slipped some mid-year increases in (sure weren't any reductions at rack rate, lol).
https://www.disboards.com/threads/2019-fort-wilderness-rates-and-price-increases.3690577/