I was in northend Port Huron on the 4th. I Oc'd at Walgreens, Toys R Us, and the sport oufit just south of Toys R Us. (Gander Mtn?) The sporting store was sorta wierd for me, they posted on their door all firearms must be checked. At first I waited outside while my wife and my mom went in and looked for a portable grill. After a few minutes I realised they might want my input so I strolled in and said to the clerk "Whats up with your sign, you want to see my firearm?"as I motioned to my hip. He took a look and said "you have a ccw?" to which I affirmed and he said no problem. Would have tried to teach him the rules, but we were running out of afternoon and needed to get back with a grill.
Thinking back, I was also at the Dairy Queen up there last summer. I don't remember if I was open or not though?!?!