From a legal standpoint? Yes, absolutely. Let me turn the question around on you: do you think that bars and restaurants should require a negative pregnancy test before they serve alcohol to customers?

Requiring a negative test is a bit intrusive, but a bar that refuses to serve obviously pregnant people would be fine IMO.

What is "obviously pregnant"? How does a bar accurately distinguish someone who is pregnant vs obese? Do you really want to have that conversation with your 18 year old waiter?

"Acceptable" is a vague word. Do I approve of it? Obviously not. Do I think society should be okay with it? Obviously not. Do I think they should be prosecuted for it? No.

Should a woman be allowed to maim a fetus she plans to carry to term?