There needs to be an R made available then I believe it goes on the basis of when you purchased the upgrade. While it would be nice to see a list of R waiters, I know of no place that you can find such a list. I too am waiting for an R to clear... checking every day... only two weeks out with 10 unassigned seats... not the same as unsold seats... for which the inventory courtesy of wanderingarmenian shows only 3, so I'm not hopeful. At least I have a bulkhead row in the back.