I agree that drinking while open carrying is a bad idea.
I don't think that all people who open carry should be branded as "ambassadors of the movement." If you see yourself as such, that's great but do not hold a similar level over everyones heads.
I consider myself just an ordinary guy trying to live a simple life free of interference. Open carry helps accomplish those means to my standard. Some people like to leave it at that.
Though I do consider myself a proponent of the right to bear arms, I do so to ensure others can remain as innocuous as I sometimes like to be.
Steve