Tick the boxes to see the rooms that meet ALL of your preferences. 
In years past, you paid the registration fee first, then later paid for accommodations and meals.  This year, it’s combined into a single purchase! 
Each person will need to register separately.  If you have a roommate, you’ll need to register first, then tell them which room you chose. When the second roommate registers, don’t select any preferences and you’ll see a complete list of all the rooms in alphabetical order.