I agree with most of what is being said, and echo Willy's post comment of "show me that in writing".
Your first move, IMHO, is to request the policy/directive/whatever that authorizes the linking of R & Q, wherein a mbr is forced to pay for rations. This does a few things for you. 1, it lets you write a clear memo to the CoC or whoever you shall direct it to. 2, if you do decide to file a Grievance IAW CFAO 19-32 and QR & O Vol 1 Ch 7 etc, this will let you write a clearly written grievance to your CO, who must determine who the IA will be and fwd it to that authority.
From my standpoint, there should be NO directive forcing members on rations if they live in SQs. There BS answers of "forcing people onto the economy/out of SQs" should result in the unfeeling SOBs who are forcing troops to spend their pay to keep a Mess/Galley open receiving multiple kicks in the nuts.
I never have, and never will, support a policy that screws the troops that does not have some legitimate military necessity behind it. The fact that the mess's are too expensive, with sometime poor menu's, food quality etc which is making them undesireable is not a problem which the solution should be forcing people onto rations.
Spark, as for your staff/CoC not complaining about the time at work missed, they shouldn't be. You are being forced to pay for rations, which is beyond your control. You cannot control the lineups. I applaud your concern here but, if it were me, I'd not be loosing a wink of sleep over the time missed out of the shop because of this SNAFU. Your CoC should be using THAT to address this situation to their own higher CoC, in terms of productivity loss's, which SHOULD be a concern to 8 AMS.
Finally, I am living-in at Warrior Block here at 12 Wing. Members here are not forced onto rations, period. The day they tell me I "HAVE" to eat at the mess and live in is the day I would ask for a copy of the directive that authorized this. I would then not take 1 meal at the mess in Warrior block. Then I would file my Grievance. I would submit a memo to my CO stating this extra forced expense by the CF is creating a situation of financial hardship (as I would NOT be eating at the mess, and still buying my own rations as I do now).
Also, is this policy in Trenton applicable to ALL RANKS. IE, WOs and Sgts and members of the Officer's mess as well? If they are going to force a standard, then it has to be a standard and not JUST for Junior Ranks.
I also agree with the point of view that your MCpls, Sgts and WOs should be addressing this up the "NCO net" and not this "oh well, put up or shut up' crap. NCOs that have that for an answer should be required to report to their RSMs and COs and explain why they have no fucking spine. Thats my opinion of POS NCOs.