Inn needs an upstairs, right? That's what bag 3 provides. Well, part of an upstairs, anyway. In the last few steps, I saw some things that could be regarded as spoilers. Now, I've found something that would definitely be a spoiler if I ever play the adventure. I've been trying to find out if you're supposed to build this in advance, or only reveal each section as the players come to it, or if the players are supposed to build it while adventuring, or what.