Early saver cabin for 4

Has anyone booked an early saver fare for a cabin for 4 and been allocated a cabin striaght away then been lucky enough to be offered an upgrade?

We got our cabin number the day after booking ( because it was a cabin for 4) it was the same grade that we booked , but there are lots of cabins for 4 still available and in the terms and conditions for early saver fares it say if available early savers may get 2cd priority upgrades if available. Has this happened to anyone who as sailed recently on an early saver fare?

Are there any saver or early savers who have booked a cabin for 4 still waiting to find out there cabin number ?

Especially on ventura in June.

4 berth cabins usually sell first as there aren't as many of them as 2 bedded ones, so I would think you have a far less chance of being upgraded but good luck you might get lucky.