Ahh, well then. You will be effected by the changes, unfortunately.
From what I can tell, RCCL hasn't officially announced where the Diamond Lounge will be held. And reviewers probably won't report on the subject until the changes go into effect on 9/1, but here's what I did learn ...
The CL overflow room was always the Dragon's Lair (?) on the Mariner so I suspect that will become the Diamond's lounge after 9/1. You will be given free wine and champagne but drinks (including beer) will be offered at 25% off. I haven't been able to figure out if the Diamond's lounge will be available every night for certain hours or only a night or two for certain hours.
However, RCCL thanks you for your continued loyalty (insert sarcasm) and hopes you'll book a suite or gain Diamond Plus status real soon.
RCCL Serenade of the Seas
That sounds good. We originally heard it will be every night and 'just' wine & champagne. We were on the Mariner (last cruise that actually made it to Mexico) and Dragon's Lair was set up for Diamond Members -- but we were allowed in the CL, too (morning, noon and night).
I just returned from Voyager in Europe. The staff set up a diamond lounge in the Crown Viking Room on Deck 14. They had a staff member there every night to oversee everything and the concierge from deck 9 came over to make sure things ran smoothly.
Freedom of the Seas Dec 11
Allure of the Seas: Jan 11
Voyager of the Seas: May 09
Splendour of the Seas: May 07
Explorer of the Seas: Jan 04
Majesty of the Seas Jan 99