Seattle: We flew in late the night before, so there was no time to spend in the city, something I would definitely change next time. Lots to do.
Embarkation: We arrived early (10:15) on the HAL transfer bus, and breezed through the check-in process (thanks to the on-line process beforehand). We were in Group 2 to board, and were on the ship at 11:40!
The Zaandam: We loved the ship, which is 10 years old, but still looking good. The staff is so friendly and helpful. My SO's 13 year old had such a great time in The Loft and making new friends that we only saw him when we insisted that he join us for dinner!!
Plenty of space for two adults and one 13 year old. Tons of storage space - more than we needed. Suitcases fit under the bed. Not noisy at all. Loved having a balcony.