Moderator, Air Canada; FlyerTalk Evangelist
Join Date: Feb 2015
Location: YYC
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Posts: 18,947
The response likely won't be positive, unless you get a super-sympathetic agent who feels like breaking the rules for you.
One option to consider: did you receive lounge passes as part of your E50K package this year? If so, you could use your guesting privileges plus those to get everyone in to the domestic MLL (they're not valid for the international MLL). Just clear security at the D pier, visit the domestic lounge, and leave a few extra minutes to do the walk over to international before boarding.