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La Prairie does Halloween properly: haunted houses that actually scare you, pumpkin patches worth the drive, and trick-or-treat streets the kids talk about all year. Here's what's on — confirmed dates first, then the annual traditions to watch for.

Oct 29, 2026 · CABARET DU CASINO DE MONTREAL
Le 29 octobre, les portes d'ALCATRAZ s'ouvrent au Casino de Montréal. Pour une nuit seulement, FRIKITON transforme le Cabaret en véritable pénitencier où musique, mise en scène et performances immersives se rencontrent pour créer une expérience d'Halloween unique.
Au programme : une tête d'affiche internationale, des artistes de pole dance et les FRIKIDANCERS, réunis dans une mise en scène théâtrale où chaque performance vous plonge un peu plus profondément dans l'univers d'ALCATRAZ. Entre Latin Urban, Reggaeton et Global Club, préparez-vous à entrer dans un monde où prisonniers, gardiens et artistes prennent possession des lieux.
Oct 31, 2026 · Vieux-La Prairie (secteur historique)
La Ville de La Prairie's flagship annual Halloween gathering in the historic Vieux-La Prairie sector, Saturday, October 31, 2026, published on the Ville's own event page: a 'Petite frousse' block for young children from 3:00 to 6:00 p.m.
(mascot animation, photo booth, candy distribution, free walk-through of the sets) and a 'Grande frousse' block from 6:00 to 9:30 p.m. with a 13-years-and-over zone. The 2026 theme published by the Ville is 'l'Odyssée des mondes engloutis'. Date and weekday verified against the Ville's event page, reached in-season (crawled hours before this build): the page carries '31 oct.', and in 2026 October 31 is a Saturday - the fête's traditional Saturday (2023: Saturday, October 28; 2024: Saturday, October 26). No price is published on the page reached, so none is asserted.
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