Missing in those numbers is the fact that (in the past anyway) one could get early entry by booking a package through UOR at one of the off site partner (I think that is the word they use) hotels.
There are also times when early entry is expanded to pass holders. So I am just trying to point out that early entry has never been limited to the number of guest at the three deluxe hotels.
Are they no longer offering early entry packages to off-site partners then?
Just looked up room numbers at the onsite hotels: RP has 1000, HR 650, and PB 750. So 2400 total. I would suspect larger families at CB though, so I wouldn't be surprised to see early entry numbers double unless there were thousands of partner hotel guests buying early entry packages who will no longer be able to do so.