Red Dead Redemption 2 isn't known for having impromptu in-world events. Rockstar tends to focus on Grand Theft Auto Online for that kind of content, due to its popularity and monetization, and Red Dead Redemption 2 seems to be aging out of content updates.
Needless to say, Red Dead Redemption 2 players were quite surprised to find what appears to be a Christmas occasion going on in-game. In fact, the event is just subtle enough that Red Dead Redemption 2 players wondered if it's an event at all.
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