There Is A Cost To Everything
Despite the fact that they don’t have to pay rent or utilities, the First Family does have to buy their own food. They have to pay for every meal they consume while in the White House.
If they stay in the Presidential Suite, they’ll be covered for their meals and personal stuff. In this manner, the President and his family will not be able to spend their tax dollars on themselves. Like everyone else in the country, they are forced to work and pay for their food.