Sticky notes are in the office. You should see three of them on the wall right in front of you, the order of the colors is the code for the fuse box.
The robot will either be in Niles restaurant (the room with the microwave) or in the Center stage.
Misty (the shark girl) will charge you if you are spamming the doll. If you are going to spam it to restock your sanity close your left door first, this will prevent her from being able to get in however she will still charge you.
Things can spiral very quickly so you have to do your best to prioritize and stay on top of things. If you have two girls at your doors just spam your sanity back to full and check one broken item at a time before closing out and refilling sanity.