Giving a "yes" in reply to a question is neither rude nor snarkey. And if the tone was a little off, then be understanding and give the CM a break. They are not little Disney robots, they are human, and sometimes it shows. And who can say that they have never ever so much as had a little off tone of voice at work? No one. It is not worth getting that worked up over.
ok, we are USED to "magical" . at universal studios they even joke (at the gory gruesome make=up show) "this isn't Disney , kid... we don't HAVE to be nice to you!"

maybe she was rude, maybe she was having a bad day.
however, the thread has taken on a "new life"... overkill? Micromanaging? some posters think it is silly to call and double check things!!! OVERPLANNING?
sorry, Disney STATES to put allergies in your ressies. as a waitress, I KNOW how chefs can be busy and APPRECIATE knowing UPFRONT about any special requests.
about double checking... even though I state room requests, etc, at ressie time, I ALWAYS call the day before a trip to double check... you have no idea how often those requests, were not listed!
and, even though an allergy to strawberries may not be life threatening (like peanuts), a nasty, irritating rash that lasts for days could SURE ruin a BIG chunk of a trip!!!! why would it bother anyone if the OP calls to double check?
in high school, I worked at McDonalds. we had a customer who couldn't have salt on his fries. we knew this, and it wasn't just a matter of NOT alting his fries. we had to empty the bin, wipe it out of all the residual salt, then make his fries (and this was in the early 70's) .
all the OP wanted was the chef to know, don't make a strawberry shortcake, then handle hubby's food. OR don't use st5rawberrys for garnish. sheesh