On the cruise that I just took, on the cruise compasses, it stated that pools were open 24 hours on the Majesty. I just got back today from the cruise. The cruise compass, which will be delivered daily to your stateroom, will state the hours of operation for the casinos, restaurants, lounges, bars, etc.
2007 - Majesty of the Seas (Bahamas)
2009 - Enchantment of the Seas (Western Caribbean)
2010 - Freedom of the Seas (Western Caribbean)
2013 - Golden Princess (Alaska, roundtrip from Seattle)