I just completed mine for my Pacific Northwest Coastal cruise on 4/23. It's pretty simple, scan your passport and then recheck that it captured correctly. My name was messed up so had to fix it.
Upload a picture of your vaccination card. Answer all the questions. Provide an address for possible quarantine. Which I used the cruise ship and Canada Place Vancouver Address.
You can put your whole traveling party on one account, just click on add traveler. When finished you get a receipt and QR code.
Took less than 15 minutes.
Use this address if your cruise ship is boarding or stopping in Vancouver.
To get into the country, use the address of Canada Place Cruise Terminal, 999 Canada Pl, Vancouver, BC V6C 3E1, Canada