As a 7* member, I normally don't pay the taxes in AC, nor the resort fee in LAS. I get free internet and movies.
I had an annoying phone issue in LAS (I assume it would be the same in AC): The rate card in my room notes for long distance "$1.50 access fee + operator assisted/min rate" [even direct dialed calls]. I inquired before making a call--the agent checked, it be only $0.75/min; a ONE minute call was over $15.00...it was removed due to "mis-information".