Not to Alaska we have not. But we took our Grand kids to the carribean. They enjoyed the trip and spent most of the time at the pizza bar. They Enjoyed there time with the old folks. Maybe because once you are on a cruise you become young for those 7 days again.
Alaska would be a great cruise to take the grand kids on. Just remember to go on a sailing that would have ther kids on it. (june, July or Aug). My kids have been cruising since they were 4 years old and now are late teens.(they just love crusing). We have sailed to Alaska 5 times and most kids aboard the ships we have sailed just love Alaska.