Last time we hosted (in late November) it was a frigid week and gameday was blanketed in heavy wet snow.
Should be a fun event, even if there are restrictions on the social gathering areas.
What won't make it fun is if the Argos are in it once again. My friends and I have been to several Grey Cups, and Toronto usually ends up winning the Eastern final those years (though we were there when Ottawa beat Calgary in 2016)