..please....I'd class 5* as Cunard, Celebrity, HAL and Azamara. P&O, Princess, RCI, NCL are 4*. Crystal, Seabourn and Silverseas are 6*.
Cunard Grill Class only. Britannia is def not 5*.
Queen Mary 2 (Grill Class), Crystal ships, Silverseas ships, Europa (5+), Seabourne ships, Seadream Yacht club ships, Hanseatic. See Berlitz "Complete Guide to Cruising and Cruise Shis 2008" for full details.