If you can't find a photo for that cabin, find one near it. Then whatever bed configuration that one is, you can do the math to your cabin since they tend to alternate bed positions every other cabin.
You merely get a credit towards internet which equates to two 24 hour purchases. You can use it for the full week package (only once on board) if you want.
Note on ships that only offer Surf + Stream, the credit is $59.98