Aenghus
Explorer
Okay, but please explain how one type of note doesn't constrain the DM but another type does? Again, this reads like special pleading: this thing I prep isn't that kind of thing that's prepped, the one that constrains you.
If I have a note that the map is in the study, how is that any more or less constraining than an encounter map of the study?
Not trying to be obtuse here, I really don't understand what the point being made here is.
IMO it's not the material itself, it's all about the referee attitude to that material. Some referees feel bound by some or all of their prepared backstory, even the unrevealed material, and may use it for adjudication purposes. Others don't and are willing to modify or throw away prep, even expect to modify and customise the material to the players who end up encountering it. The more fluid the unrevealed material, the less constraining it is and the less likely that player ambitions will be stymied by hidden backstory they may never discover.
Is unrevealed prep totally binding on the referee, somewhat binding, merely guidelines, or entirely expendable? Different referees have different opinions.