Visited Wed May 10.
Pros
Beautiful architecture and grounds are very well kept, that is what your admission fee is paying for.
The cafe and restaurant are open to the public.
Cons
I can't even take a selfie, the 2nd floor no photos allowed lol.
Very small exhibits, and not worth paying $20 admission for.
Took just 1 hour to go through the entire museum.
No free parking, $10 per car.
Not TTC accessible, would recommend driving.
Damage - $0 Every Wed it's free between 4pm and 8pm.
Protip - The Ismali Cultural Centre (the glass pyramid) has tours that need to be booked in advance. "Tours of the Ismaili Centre, Toronto are generally offered during the day on Wednesday, Friday, Saturday and Sunday, and during the evening on Friday, Saturday and Sunday. Only the dates / times displayed on the website are available to be booked. Also note that tours must be booked at least two days in advance."