As for proposals during holidays and otherwise
I've a couple who were BFFs with maxed friendship and romance. Outside of a holiday, one sim proposed and got shot down. After some romantic socials, the other sim proposed and was accepted.
During Love Day, I have a couple who met just sim-hours earlier. Again, BFFs and with friendship/romance at about 85%. This proposal was accepted the first go.
So I have no conclusions to draw about proposals and holidays.
But I'm sure the constant Sad moodlets from mourning barely acquainted sims has been doing my game no favors. Grrrr.
@callycat Thank you for sharing that shot of your Hannibal and his highly suspicious posse of rowdy companions.
Hannibal is quite handsome, though. May I assume he's a snob? lol