With all respect....
Regardless of where I was going on vacation where OC is legal.......
If my over riding concern was to not take the chance of being hassled for OC............ I'd CC.
If I wanted to OC I'd understand that perhaps I'd be hassled for it and deal with that.
There is a third choice... I could stay home.
And yes, I've had to make that choice concerning going places (not a vacation since I'm on perpetual vacation anyway) before and sometimes I'd CC because of other over riding factors... sometimes I'd OC and just deal with it... and sometimes I simply refused to go.
However... I can say that from 7-14-10 to 7-16-10 I OC'ed all over the Marquette area and points in between there and Saginaw with no problems what so ever. Don't know if that helps you decide or not.
But, in all truth, regardless of if it's the U.P. or the L.P. the only way to discover if a place is OC friendly is to.... OC.
And, in all seriousness, regardless of your decision I sincerely hope you and your wife enjoy your vacation!