Yep, that’s how I do it too. If your weapon is properly concealed, the management will never know you’re armed, and you can’t be charged with trespassing if you leave promptly when requested.
Depends on your local police. Lots of video on You Tube of corrupt cops detaining people, soliciting a trespass, and then arresting someone even though this is illegal.
Some of the police departments pulling this crap are in Texas. And after this event you can expect more than a few Texas cops not to give a rip about the law or your rights. Especially in Democrat run jurisdictions like Austin or SA.