From the 60's through the late nineties, my family owned two restaurants at the Jersey Shore. Getting waitresses (sorry, "waitstaff") to work on Sundays was like pulling teeth. It wasn't because the girls wanted the weekend off, but because they knew that most of the crowd would be churchfolk and that they wouldn't make any money.
Yes, Christians have that reputation and unfortunately, it's true.
Also, don't send tracts in with your bills. The machines that process your payment are calibrated to accept only the thickness of the envelope and, the stub, and the check. When you put a tract in the envelope, it increases the thickness beyond what the machine is calibrated to handle. This causes the machine to jam and gets the operator in trouble, because he has a quota to meet and this prevents him from meeting his quota and gets him in trouble.
That's not a good way to make someone receptive to the Gospel.
If this happens enough, then the machine has to go down for an hour or more to be recalibrated altogether.
And that's why you should always tip your waitress.