Since the non-sewer group seems unsure about what to do, I figured I'd write up a helpful list;
1) Snoop around the Guardhouse to try and figure out the guard rotations for the bank.
2) Snoop around Carmichael Manor and/or Frederick's Cabin.
3) Do something else?
And on the note of No.3: I'm trying to make this story pretty open-ended in terms of how you approach the Heist. Yes, I have a lot of stuff pre-planned, the entrances to the bank being a good example. But I'm also trying to adapt things to you guys. The whole Tarvok event was almost totally improvised (I wasn't expecting you to hitch a ride with him at all!), and I didn't even consider the underground approach to things until Vader came up with the idea of sewer-Kobolds.
What I'm trying to say is, don't just rely on my hints to know what you should be doing. Because the list of things you "should be doing" is pretty short, honestly. Everything between now and the Heist-night is almost a complete mystery, even to me.
So if you think of something cool and interesting to do, just go for it! Worst that can happen is you waste a day/night bumbling around doing nothing
Or get caught by the guards. That'd be pretty bad too
![Wink ;)](./images/smilies/goblin-wink.gif)