My wife and I traveled with our two children, ages 5 and 7, on the Coral Princess 7 day, northbound Vancouver to Whittier "Voyage of the Glaciers" sailing.
The ship - the Coral Princess is a newer ship and it is beautiful. The most notable comment I have is that, although the ship was full to capacity with nearly 2000 passengers and about 900 crew, it never felt crowded. There are a huge number of public rooms and various nooks and crannies where you can hang out. So, whether you want peace and quiet or lots of activity, there's a place for you on the ship.
Embarkation - we boarded the ship at Canada Place in Vancouver. We dropped off our luggage in the late morning and then caught an IMAX show at the Pier before boarding. Boarding was quick and easy. When we got to our cabin, our luggage was already there waiting for us.