Just to explain breakage a bit more...technically, breakage rooms are any DVC rooms NOT reserved by DVC Members on points 60 days out. They are turned over to Disney cash reservations, and they rent them, and then give some of the money back to DVC.
Disney has access to DVC rooms from other sources, as well. When a member trades out of DVC into an
Adventures by Disney, non-DVC Disney resort or
Disney cruise, those points are turned over to Disney Cash reservations to offset the cost of where the DVC Member traded.
There is also the previously mentioned Undeclared/Unsold inventory in newly built resorts, like Riviera AND the 2 % to 4% of points that Disney retains in each resort. So they do have a lot of options to use the DVC rooms for cash reservations...and as I said earlier, it is not at all unusual for them to upgrade cash guests to DVC from value and moderate resorts, depending upon the season, if the cash resort is overbooked, of if cash resort rooms are down for maintenance issues.
I hope you have a lovely trip, and as odd as you may find it to have a full kitchen in your room, you may find it very useful during this pandemic, if there are limited dining choices.