Carnival Splendor Cabin Question

[JasperCruiser]

I booked an interior guarantee this weekend for an upcoming Splendor cruise and I've got a quick question. I noticed that the cabin category was listed as "IS Interior".  I've seen 1A, 4A through 4H and so forth, but I can't find my cabin category listed anywhere. It may be because it's an unassigned guarantee, but I'm just curious. 

[TrqoisWtrs]

Yes, interior guarantee.  

 

https://www.cruisemapper.com/cabins/Carnival-Splendor-547