I'm with Dan Callahan on that one. Three of us once had a 10Am tee time at a sporty little semi-private club about 30 miles out of town. We got there about 9:30 and checked in, and the proshop guy apologized and said they were running about 45mins late, pointing out to the first tee cart staging area where the place was backed up about 8 cart loads deep with middle to senior age ladies, all cackling and none of them even remotely were acting like they were at a golf course. No one told us we'd be right behind the local garden club or whatever gaggle they were from, having a golf outing.
We turned around, put our bags in the car and drove 30 miles back to a local muni and got right on.
Other oh-no signs are going to an unknown course and not even turning your car engine off, before being greeted by some H.S or college kid dressed in checkered golf knickers and faux Scottish garb. That is a sure sign to not turn off your engine and beat ass out of the parking area.
Also, arriving at a parade of homes golf community course, that is supposedly open to the public, and stopping at a gate house and needing nearly a passport and two pictured forms of I.D. to get in to check into the pro shop.