Chip, you are too funny.
Olivia and JoAnna, The floors and ceilings are all level on each deck. Then the bathrooms are added. There is a 5" step (assume for plumbing waste pipes). The ceilings are all the same height too. The rooms are all prefabricated boxes joined together on a spine of metal. Think like a trailer/mobile home might be.

ceiling -----> _________________________________

Tub 5" Above __________________
Bathroom Floor5" above _________________________
Cabin Room_______________________________________

ceiling -----> _________________________________

Tub 5" Above __________________
Bathroom Floor _________________________
Cabin Room_______________________________________

ceiling -----> _________________________________

Tub 5" Above __________________
Bathroom Floor _________________________
Cabin Room_______________________________________

VOYAGER:
MC to FLL 11/07
MC/Dover 6/06
MARINER:
BCN / Ven 10/11
Alaska 2001|2006
Panama Canal 2003
NAV
Caribbean 11/06
Bermuda|New Eng/Canada 6/04
PG 5/05
OCEANIA
Nautica |Ist/Athens 6/07
Regatta|Baltics 6/08
Riviera 2013 Crossing -Istanbul to Miami