There is a significant snowfall forecast for Southern Ontario beginning Friday evening and continuing into Saturday. Driving will be difficult, especially in the area you have specified due to probable lake-effect enhancement. If you can't get a flight in early Friday morning, I would advise flying into Detroit, getting to where the funeral is and staying put. I would think twice about driving between the three areas you mentioned once the snow starts. (Why do I sound like MWP all of a sudden?)

Once the snow stops, If you want to play with decent rules and limits and with no CSMs, Casino Rama (Orillia) and Fallsview (Niagara Falls) might be your best options. By "decent" I mean 6 or 8 decks S17 DAS. 6D will be in the high limit rooms only, if at all. Penetration can be good (5/6 or 7/8) if you get lucky.

Beware --- all casinos managed Great Canadian are CSM only.