At YVR you will receive access to either Plaza or CX lounge depending on your date and the renovation of the CX lounge. Both are okay lounges with average food and drink but nothing compared to the CX lounges in HKG. They are a completely different league. You will get to access those if you are departing from HKG in CX first class or OW Emerald status.

Are you taking the 320am or 340pm? In either case the seat will be a full flat bed. You have AVOD with tons of choices. There are noise reducing headsets in the seat. They will offer you an average amenity kit but a nice sleeper suit from Shanghai Tang as well as a duvet and nice wool blanket. The sleeper suit has black pants and a sort of mandarin collar style shirt. They have slippers in there too.

Drinks and canapes such as a little piece of salmon or scallop served prior to takeoff followed by more drinks and almonds after takeoff. If you take the 320am flight, you will miss the caviar and smoked salmon. Otherwise the menu is pretty much a-la-carte order on demand with lots of choices from snacks to both full asian and western meals.

The flight attendants will provide an excellent service. If you get bored with the AVOD system, they have plenty of magazines and newspapers.

Very few airlines offer the level of service as CX first class. I'm sure you will be pleased.