If I'm sitting in a Chili's (god forbid) and a dude walks in carrying an AK47, there is a very small but very real chance I jump up and stab him in the neck.
IF I was ever in a position to where I was compelled to bring something like my AK47 into a chilis (purely hypothetical).... I would respect the manager/employees/customers and make sure it was unloaded, with the chamber open, magazine removed, and it was kept pointing down at the ground.
I would stop at the check stand and
relinquish the firearm to the manager to store in the back, while i kept the magazine on my person (in a pocket or bag) to avoid someone in back getting ahold of a loaded rifle in the store).
I think that's the responsible way to handle a situation like that.
I've carried my daily carry pistol into Chilis many times when I wasn't drinking or if I was only having a beer with lunch.... nobody has ever been the wiser because that's the point of a concealed carry.... to protect myself/my loved ones without causing fear in those who might not share my stance on guns.