In Canada in general tipping is expected for appropriate service; we're a bit behind US in general, about 5% (when they were 15 we were 10, when they inched to

In Canada in general tipping is expected for appropriate service; we're a bit behind US in general, about 5% (when they were 15 we were 10, when they inched to to 20 we centimetered to 15, now we're moving to 18). I wouldn't say it's quite mandatory though, and especially not for service not meeting the standard. Now, if you are in a large group, many restaurants will have a percentage gratuity applied - this is clearly stated on menu, receipt, etc. It's not typically a dollar amount. While there may be specific few diner joints where bad service is part of the "charm" of greasy but delicious food, overall it sounds you just got a grouchy waiter and poor service :-/