On a more constructive note, I believe it's important to at least attempt to address the issue with the owner/operator/manager, if for no other reason than if you don't, they'll simply become more emboldened in their mis-informed/guided efforts to "improve safety" and the other uber-liberal hogwash.
For another reason, RMGO have discovered, and I've confirmed with my interactions with the managers of about three-dozen stores here in the Springs, that of the few who initially say they don't allow open carry, about a third of them change their minds with a simple visit and short talk with the manager. Another third take a little more time, including some very good material available both here and on the RMGO website.
It's the last third you should leave in the dust and refuse to do business with. When one automatically dumps the other 2/3 into the same hopper as the last third, however, we loose good opportunities as ambassadors to spread goodwill, educate the uninitiated, increase the number of establishments respecting the rights of 2A exercisers, and help deter crime throughout our city.
I have a vision whereby, one day, enough of our honest, law-abiding citizens will be open-carrying that any criminal with half a flip towards self-preservation will either move elsewhere or find a real job.