I'll just respectfully rebutt one thing
You can def do everything in HHN if you don't buy express, it's not mandatory to do everything. However, to be able to do anything, you will need to have some form of a plan. Doesn't need to be minute by minute, but just an idea where you want to start and the idea of directions you want to go. Example, I have usually have a plan to start in the back as everyone usually rushes the houses in New York area. Get those out of the way, and let the initial wave of the front houses clear out. Or if want to do S&S, need to figure out which one you want to do. By maximizing your time, you can easily do 3-4 houses in a hour (or less).
But you can still also have a great time by just going with the flow and doing whatever you want whenever you want. Just don't go in with the expectations of doing everything (you still may though).