I am going to book a short cruise on the navigator of the sea and I am taking my two grandaughters with me. I usually book a balcony cabin but as this just a short break I thought to keep costs down I would book an inside , now because there will be three of us we have to book a L Cabin which is the dearest of all the inside but I can find nowwhere where it says it is bigger than other inside cabins as say N cabins which is the same area on the ship and as people book these for two people and I will be paying extra for the third surely this must be bigger. I would be grateful if someone can adise me. Also which are best the ones that back onto another cabin or the ones with hallway either side.