As the subject says, we're on a hiatus - what happens?
Just like any other days, days of a hiatus pass 1:1 real:game time. Naturally, the PCs and action in play are frozen in game time. But when they come out of the dungeon, time jumps ahead to the current day.
The real trick is that the PCs will get back on the appropriate game-day, but then basically lose a bunch of time. It happens . . . it's unrealistc but it's the easiest way to deal with the issue. It punishes the players who would like to "realistically" use that time for their PCs to order up armor and weapons and such, but it also relieves those players who don't have the free time for game prep. They don't fall behind. It's worked so far and I don't see why it wouldn't work here, too.
Restocking Will Happen
Just in case I get hit by a blimp* I save this until the last minute. But it will happen all at once, and reflect months of changes in Felltower. Yes, this is the hard way, but here we are.
Ironically, this is least likely, because I haven't had to the time to really fiddle. I mean, it's possible, but I just haven't been noodling around with the rules too much recently to have plans for when we're back.
Also shouldn't happen. The pool won't change.
Overall, it's just like a short hiatus except we'll need a much bigger restock.
* Which I'm pretty sure is a Bloom County reference.