Having done 6 cruises previously on Celebrity, my partner and I accompanied friends (very loyal Royal cruisers) on the Vancouver to L.A. sailing. I think Celebrity has spoiled me as I have never had a negative comment on any previous cruise, but I lowered my expectations for this cruise and they were unfortunately met.
Weather upon arrival in Vancouver -- cool and damp. What you'd expect, and certainly not the fault of the cruise line. When you are used to Caribbean sailings, though, it sets a different tone. We chose to go on this cruise for the itinerary, so we didn't expect Caribbean weather, but the cool wet start to the cruise really did damper the attitude a bit. The good news is that the weather improved with each and every passing day.
Embarkation and disembarkation -- smooth. Great start.