With hotfixes that we are currently deploying to all WoW Classic realms, we are substantially increasing the number of players that can be simultaneously logged in and playing. We expect this to result in smaller queues for realms that have large queues, and some realms should no longer have queues at all.
We will closely monitor performance and stability throughout this process.
This should have been a day one fix, if you really think most players will quit and dont want dead realms just let all the tourist into the servers, if they leave before P2, the problem fixes itself, if too many people are still playing by P2, they will have to add more servers or keep layering anyway.
Why they moved so slow on this obvious fix many people brought up on day 1 just makes no sense, except in a its blizzard in 2019, dont expect competence from this company sort of way.