I don't mean to make a blanket statement, I have MANY friends in the food service industry. They all hate working on Sundays. Entitlement is alive and well in this country, and it knows no religion (or lack thereof). But also having been a sales manager for a major hotel chain in downtown Minneapolis, I can tell you that religious groups were, far and beyond, the most difficult, demanding, rude, and disrespectful guests to work with.
Take that as you will.
I support this girl doing what she did 110% (even though she really should've cut the guys name off - that is definitely a privacy thing). But that smug jackass will think twice before getting all high and mighty with someone who makes minimum wage plus "Tips" again.