Freedom of the seas

We’ve already booked and paid for our cruise on Freedom of the Seas. I didn’t realize you could pay to pick your room. Is it too late now?

We have booked our first ever cruise with Royal Caribbean Freedom of the Sea. Our itinerary says Stateroom. GTY. What does this mean? I thought we booked a balcony room? And do we pick the room or do they. We’re confused?