• Rule #1: Timeframe – You will have 24 hours to build an app that addresses one of the four challenges.  
• Rule #2: APIs - you must use at least one of the Sabre REST APIs, outside of that you are free to use any open 3rd party APIs or content providers. 
• Rule #3: Fresh code – We will all start coding at the same time. This is done to keep things fair. Please don’t come in and build on top of previous projects if you want to win. It’s fine to work on designs beforehand, such as digital mockups, open source frameworks and anything else available to everyone, but make sure to keep designs within those limits.
• Rule #4: Team size – Teams of up to 5 participants are allowed.
• Rule #5: Demo your hack – You must demo your hack in order to present. No PowerPoints will be allowed. Don’t be scared if you didn’t finish, just show us what you got done.
• Rule #6: Have fun! – It’s a hackathon! Use whatever languages or hacks you have in your arsenal. Show us hardware. Show us new concepts. Show us anything you’d like.

To see the official rules please visit the Hackathon page on the Sabre Dev Studio site.