I managed to score 118 in my last 3p game -
https://boardgamearena.com/table?table=629894422
This set up had the personal domain action + 5 coins in the 5 iron training yard, which was a great combo for gathering resources via personal domain plus coins to enable running lanterns plus the 2 point warriors for end game scoring.
Resources felt plentiful and more limited by what actions were available in the castle.
With early courtiers on the second level, I ran lanterns 2-3 times per turn and gained 4-6 vps each time, for a total of 21 vps.
Agree that you definitely need a good board set up to have such a high scoring game.
We both also had the seal bonus card which I think grants so much flexibility in actions, resources, heron track, etc.
Probably also affected by the other players at the table, since I see both our games have a wide range of final scores.