the twin beds have bunks above--which the steward wil pull down at night and remove during the day.
it will be small for 4 but doable--be flexible--2 people dress for evening at a time--others go somewhere and relax
You did not say which ship you will be on. They are similar to this though. This is Sovereign of the Seas. The lower beds are pushed together in this case and the two bunks fold down. In the newer ships they come out of the ceiling and you wouln't know they are there.
This is from the Enchantment. Inside cabin on deck 8. A little blurry but you get the picture.
Dave the Wave AKA- Diamond Dave
Song of America Dec '90
Starship Majestic May '89
Sovereign X 5
Majesty Jul '01
Enchantment X 4
Regal Empress Dec '02
Mariner May '07 April '08
Grandeur Feb '08
Inspiration Oct '08
Radiance of the Seas Oct '10
Think large closet and there ya go! Monarch is 15 yrs old and the cabins were all smaller. Instead of dreading it, look at it as an adventure. I have done it on "Viking Serenade" (not even in "RCI" fleet any longer) with 3 other guys so am not talkin outta my Sax. You will be on a "short run" and all of a sudden you will be back on land, wishing you could get back on the ship!