It seems clear the minimum wage plan is strictly a political move as the Liberals continue to eat the NDP's lunch. 
Dismiss Maggie's anecdotal evidence all you want but it's been said by others as well.
Small business will take a hit. 
The $15 rate will affect mainly the young - probably not in a good way. 
Yesterday my partner and I discussed the exact same restaurant scenario as the Maine server - prices will rise but hey - no need to tip any longer. 
What about the ripple costs as employers deal with staff that make $15 now? 
What about manufacturers threatening to leave Ontario?
Big box stores will simply raise prices to cover the cost. 
As mentioned in another post - the underground economy will get a huge boost. 
And when all this comes to pass the Liberals will do what they always do and throw borrowed money at it. 
Wynne will gleefully announce tax breaks for affected businesses. 
Prices and debt will rise yet again.