I always book the particular cabin I want--if I didn't want it, I wouldn't have
picked it out and booked it to begin with.
Once we were asked if we would "upgrade" to a suite--I checked the location and accepted.
With all respect to Snooze, I don't believe 90 % of upgrades are that great. How is moving up a deck or two from one cabin to another any better--could be worse--could be over / under the disco, show lounge, galley, etc. One has to be careful before jumping on the "upgrade " wagon.
I hope these folks get back what they had booked--I think I too would be a little on the upset side had someone moved me without so much as asking.