For years, I've used spreadsheets for keeping track of our points (6 contracts, 4 memberships, 3 UYs)........but gave up this year. Between rescheduling, adding & subtracting rescheduled points (4 times), banked/borrowed/unborrowed & expiring points, crossing UYs, etc, I had to give up. I now have a steno book almost entirely filled with pages of changes. The good news is that after all the dust settled, i reanalyzed our upcoming trips & was able to save ALL our points with a bunch of manipulations amongst contracts!
I usually have our planning spreadsheet all done at least months in advance, but am only starting now. That one is my personal favorite, with flights (#'s, date/time, cost, RR #s),
DVC ressies (#'s, room type, requests), daily park hours (including EMH), Festival info (concerts, shows, etc), FPs, Dining, special dining discounts, special activities, etc. A friend asked me why i bother, so I asked her to check her
MDE - sure, enough, it proved my point that MDE is just to unreliable to depend upon. You can also see all plans for an extended visit (we go for about 2 weeks) easily on a spreadsheet, something that's impossible on MDE without a ton of scrolling up & down, back & forth.