I remember feeling the storage was limited while sailing in a standard inside on the Fantasy. Storing suitcases under the bed is nice, but that isn't helpful when you need more drawers for use during the cruise. We used the coffee table block, and storage was tight just between me and my young son. For 3 adults, I personally wouldn't do it. I know the insides are a bit bigger on the classics, though. Can't remember what storage was like when we sailed inside on the Magic.