Question: what is the difference between stateroom categories?
Answer: There will be stateroom codes, such as D1, D2, D4, E1, E4, etc. Essentially, the difference between all the Category D staterooms is stateroom location, and potentially size of the room as well. The lower the number, the more desirable the location of the room in terms of how close it is (or is not) to mid-ship.