That is a SA thing, as Sinbad has pointed out waiters in other countries uphold a higher standard and level of professionalism. Of course you cant generalise that, your Burger King cashier probably has the same attitude as our local KFC ones (though the McDonalds cashier guys in Hong Kong are very courteous). Probably the biggest reason for service/performance being linked to tips/performance bonus is that we can't just fire employees. Imagine if you could fire an employee without the CCMA on your ass, workplace incompetence won't be much of an issue and your food order will most likely be correct a vast majority of the time. Employer abuse is a different issue though.
What is Wimpy

?