Took about 45 seconds after 12PM before I was able to get the code to show up on the website (dumb that you have to use the website AND the APP to get this deal.) Of course they made it more difficult by randomly moving the times around, and having the 12PM hotels disappear completely right at 12pm.
I'm done, only had two hotels I wanted. I think this is partly a contest/lottery where your chances of winning aren't that great. Skill (being able to type in the code quickly enough) I bet is only a minor part to it.