I don’t believe in the concept of “public accommodation”. I realize it is the de jure policy (via 1964 CRA), but in my view, the 14th Amendment applies only to actions of the federal government, and the state governments.
Sadly, though, the 5th section of the 14th Amendment gives Congress very wide berth to legislate in this matter.
Having said that, I agree that "We reserve the right to refuse service to anyone for any reason" should be the law of the land.