Ask game for CoS DMs (because you know we all want to talk about our campaigns)!
How much of your campaign is RAW, how much is other people's homebrew, how much is your own homebrew?
How long has your game been going? Is it finished or unfinished?
What did your players do with Doru?
How did things shake out in Vallaki? Who's currently in charge of the city (if the city is still standing?)
What's the biggest curveball your players threw at you? Or just something wild/funny they did?
Did you make any NPCs more sympathetic than in cannon? Or less sympathetic?
What's your named character death count so far? (Players, friendly NPCs, villains.)
Did your players try to romance any NPCs? (Successfully or unsuccessfully?)
Did you genderflip any characters, or make anyone more queer?
Is there an NPC who's minor or forgettable in cannon that ended up playing a huge part in your game?
What, in your opinion, is the wildest change you made from cannon?
What is your favorite part of the RAW module? (Or one of them, if your favorite part is something big like "the tone" or "all of it.")
How did you play Strahd? What's his attitude towards the party, Ireena, the world in general?
How did you play Ireena? Did she stay with your party much of the time, or did they stow her someplace while they went off adventuring? (Or did she get kidnapped early on?)
Did your party attend dinner at Ravenloft? How did it go?
Did you leave in or take out some of the more unpopular parts? (i.e., Mordenkainen, Something Blue, Strahd always coming back after being killed.)
How did you handle the more problematic content?
Which NPC (or NPCs if its multiple) is your favorite to play?
Who is your party's fated ally? Did they successfully meet? How do they feel about your party?
Did your party reach the final fight yet? Who was with them? Did Strahd die, or did the dark lord of Barovia prevail once more?