Normal
We were on the Infinity over Easter and the ship had a record 500 plus kids on it. Such a number might be normal for a Carnival or RCCL cruise, but it was very high for Celebrity. However, the staff kept them pretty busy and we found it to be no problem. We're empty nesters who like our quiet also...if the kids had been a problem at all we would have noticed. I'm sure if you go on Celebrity during a non holiday time the number of kids will be much much smaller than that.