Just bought riv last week and got the 2021 points. Not a fan of vgf and wanted to be closer to Epcot. If you’re buying 50 points you might get more value out of riv with the tower studios depending on how many people you travel with.
We own at both VGF(1) and RIV - and at 50 points, I would say buy where you would like to use those points at 11 months, with a slight weight to RIV because 50-100 (with banking) points will go a lot farther at Riviera. For example, 50-100 points can get you 2-3 nights in a tower studio or a standard studio (sleeps 5) over New Year's. (more on this later). The same # of points will get you 2 nights the same time period, not 3.
With the # of studios soon to be available at VGF, you stand a better chance, I think, of getting a standard studio at VGF at 7 mo than getting a (
tower or) standard studio at RIV. And a not very well kept secret at Riviera: most of the standard rooms have views of MK *and* EP fireworks. DH watched NYE fireworks on 12/31/21 and he said they were the most amazing fireworks he's seen anywhere (and we live in NYC). **edited to add: I am not sure that we would ever book Riv preferred over standard because we prefer standard - all the time.
If you already are leaning toward Riviera, the possible value of resale at least 10 years down the line is not something I would worry about now. The delta is not likely to be huge, especially for 50 points. The resale restriction, imo, is overblown. You are not the one who will be contending with it, and it only matters if you decide to resell your points, which may or may not happen any time soon.
My kids seem to prefer VGF more, DH and I like RIV more, but you really can't go wrong with either.
**edited to add: even assuming a $2 difference in dues, that's $100 difference in dues per year, not really something that should have you looking at your 2nd choice resort. Similarly, even if RIV resale sells consistently at $30 per point less than VGF, you might recover $1500 less sometime in the future. Riviera rentals are pretty hard to come by, because most of the new owners are busy using their points. You could easily "make up" that potential difference through point rentals, if you wanted. (I am never putting our RIV points up for rent. Just sayin'.)