Obviously, most of you believe that this woman was wrong to deny this couple service.
Are there any acceptable reasons for denying someone service?
Yes of course there are. A good rule of thumb is the "What" Vs " Who".
For example you can refuse service based on WHAT someone is wearing. No shoes ? no service ? for EVERYBODY. But what if you only refuse service for black folks without shoes? Then this would be unacceptable because you are denying service based on WHO it is. Get the point?
Again, when you have a customer facing business, you are not afforded any personal liberties, because your business IS NOT a person. Your business is an entity that serves the public. An entity has no personal views.
If you own a business that makes cakes for example and you are a JW, and you don't want to bake for a gay person, you don't need to bake the cake, but your BUSINESS does. So if you have another employee that is ok with this, you must have this employee provide the service.