For the record, in my own opinion, an individual, a company, or any other private organization should be able to establish the rules concerning who and what comes onto their property, inside the vehicle or out, inside their breifcase or out, inside their brown paper bag or out.
If folks don't like it, they are free to go somewhere else, get another job, or, violate the property owner's wishes and take responsibility for the consequences if they are found out.
This is America and I am an Americam. I'll stand my ground and promote and protect Freedom.
Stay safe.