My husband and i travelled with our 5 year-old on board the norwegian gem and were very disappointed at the lack of entertainment/activates for our son.
The "kiddie pool" was 4 feet 11 inches deep. our son is tall for a 5yo but still only 4 feet tall. since when is a 4 feet 11 inches a safe and enjoyable depth for kids? so he opted (like all the other kids his size (and smaller)) for the jacuzzi. unfortunately, there were up to 18 kids in one hot tub! in any event, no one should stay in a hot tub for more than 20 minutes for health reasons.
He was not allowed to participate at the bowling alley. the age requirement started at 6-years old. yes, the bowling alley attendant checked his age on the manifest and turned us away.
Cabin was great. The cabin attendant was super helpful and kind to our family.