Rule #1 at McDonald's: Never customize. If you don't want pickles, take them off yourself. Otherwise they'll just get it wrong.
Whenever I took my kids there I told them "if you don't want it the way they make it then don't order it."
Whenever I took my kids there I told them "if you don't want it the way they make it then don't order it."
Hard to know for a fact without knowing where I live, I'm guessing :) FWIW, it's not true at McDonalds in Spain, they definitely have popular stuff sitting behind the counter for longer than the items you customize here.