The orange columns are intended to be actual inputs over time to track your contact value. I have equations in there now as a place holder so you can't just delete every other value for the room rate without updating the room cost estimates manually for the years you do stay. Easiest way to do this is to apply a 5 percent price hike to the stay from 2 years prior.
Also, your cash room or rental costs should be double on the years you do stay which should offset the non stay years. So if you have 200 points but use 400 every other year then make sure the room cost is equivalent to the 400 point reservation room rate and not a 200 point reservation.
Your MF are annual costs whether you use your points or not for a given year and that is how the spreadsheet calculates them. If you wanted to do mental gymnastics and associate MFs with the years the points are used for bookings, you can do that but you're still paying the fees on a yearly basis.
This spreadsheet also ignores your savings by avoiding travel costs, park tickets, food, etc by traveling every other year. In reality, traveling this way has a way lower opportunity cost than going yearly although the overall cost of a
DVC contract was outside the intentions of the spreadsheet because there is such a wide range of ways you can do disney trips.