My family went on a Monday for lunch and it was pretty quiet. We are not experts on poutine, but we had to try it during our trip in Montreal, and we loved it ! Thankfully we aren't from the area because we definitely don't need the calories.
The portions are very generous - I think if you're not too hungry, 2 people could even share the regular. My brother finished one on his own but I needed some help near the end :) The server was very kind and answered all of our touristy questions. He spoke English and French. They have outdoor seating with shade which was perfect on a summer day.
From the Menu:
They have a make-your-own option for Poutine toppings, but my family isn't expert at Poutine so we decided to go with the ready menu items.
My parents shared a large Zeus Poutine. This was my favorite - the gyro in the poutine was so yummy. Even between the two of them this was a LOT of food! The portions are large so come hungry or beware :) this comes over hand crushed potatoes which are delicious - I would say they're somewhere between French Fries and Home Fries.
I had the Farmers Poutine, which I enjoyed because it didn't have too many ingredients compared to other options, and I didn't have too much of an appetite.
My brother had the Hangover Poutine, which was a sensory overload (in a good way) and was very tasty. It was pretty spicy because of the hot sauce, so don't order this if you can't handle spicy.