We sailed Alaska with a 1 year old and 3 year old on Celebrity out of Vancouver...this being a
DCL platinum...and wouldn't think twice of doing it again. The kids had a blast in the kids club. Bigger doesn't always mean better...at least not for my kids, since the attention was amazing and less kids so more interaction with the counselors.
Glacier bay was amazing...they literally opened up every viewing area on the ship (restricted or not) and the views were breathtaking.
The kids really enjoyed going to the front of the ship and looking down at the sea animals sitting on the ice and the calving of the glacier.
Overall, while there will always be pluses and minuses, we got a suite and still saved over $2000...but most of all, had an amazingly memorable vacation!