To be honest, I'm afraid to. I would rather take my chances when I get there. If there is a mistake, it would be easier to be at the podium giving the Manager my sad, puppy dog face and hoping that they can squeeze us in rather than trying to beg a Cm over the phnone to find that one more table who can't do anything but tell me no.
Just my two cents...
I'm with you too. I actually had this happen...
Reservations to Akershus were wrong and I did not know.
We arrived to the podium in Norway with my little girl all dressed up and they couldn't find our "name" but luckily I had our ADR number.
They looked it up and said that we had missed our reservation

...apparently the CM made our reservations for Nov 7 instead of Dec 7.
I called about 3 weeks before our trip and checked our reservation before we left and neither the first CM (that made the ressies) nor the second CM caught the mistake.
Had the second CM caught it I would not have been able to get reservations with such short notice. I would have never gone to Akershus...I went, in good faith that everything was fine. And I thought everything was!
Anyway, the manager came to the podium and he took one look at my little girl and whispered that he would "take care of us" and to "be patient while he worked us in". Less than 10 minutes later we were in our seat. Talk about Pixie Dust...
After our meal, I went to him with tears running down my face and thanked him for making my little girls dream come true (this was our only princess meal)...I'm tearing up now just thinking about it...he was amazing, he didn't have to do that and we were so thankful.
Now, that being said, I love to know everything is in order and I like to double check everything. I have heard/read of reservations being inadvertently canceled by a CM. (on the Dec trade reservation thread) Although, it has never happened to me.

Here is to keeping our fingers crossed that it doesn't happen to any of us.