I finally visited La Banquise a few days ago after continuously postponing my Rendez-vous galant with diabetes and impending morbid obesity for a few months.
I shared, with a friend that seemed to have been guilt stricken after the meal, a large T-Rex with one hot dog each. The service wasn't remarkable nor was it slow. We were seated quickly and swiftly by a friendly waitress that seemed to know only very rudimentary English. She's hardly to blame since it's located on Le Plateau and half of the residents there look at me like a booger is hanging out of my nose whenever I start a conversation in English.
The meat happened to be better than the actual poutine. The fries were above average but there were more stretchers in the restaurant than there were bits of cheese in my poutine. In my honest opinion, the gravy was inferior to many places I've been to. It wasn't anything close to the thick petroleum tar you get at Decarie Hotdog but it was cheap, thick and tasteless.
The meat was in substantial quantity and it felt like they neglected the rest of the poutine because of it. The hot dogs are cheap and most likely came from Super C's 8 for 2$ packages that sit on shelves for months before a poor sod tests his luck at not getting an indigestion.
The selection of poutine is huge though. You'll find one for you.
The atmosphere and ambiance is nice. Everyone was happy, the restaurant is cozy and surprisingly well aerated for such a small place. We sat approximately 5m away from the kitchen fryers and the air heavy with grease.
Kudos on it being 24 hours though.
This is honestly more of a tourist attraction than anything.