Scripted rooms in D&D

One D&D issue is when a module’s room description has something happening just as a party is about to enter a room.

Arden Vul has a mix of room types:

there’s a tiered roll-table system for who is there and what they’re doing / what they want

there is a schedule of hours (sometimes combined with probabilities)

there is just a probability

and a few that are just “the prisoner is dying and will die within three rounds of the party entering”.

I think this is a fine mix but that last type can undermine the other types. It’s instantly noticable by the players as feeling “fake”, and it can make other things feel similarly fake, even when they’re not. They’ve been sneaking around in a prison lately and at one location there was people being there just twice per day, and the party happened to leave there the exact same time as those NPCs were arriving (at our ten-minute-turn granularity). That sort of awesome timing accidents really happening for real is to me a lot more memorable and awesome than any “scripted” room has ever been.