If they don't have your arrival info - no problem. There are shuttles all through the day. You will be asked to give your return details when you check in. If you booked with a travel agent then they will have sent your info. to Couples.
You need to do nothing but bring a smile. They know you are comming. After you get your luggage and pass customs, make a left into the great room and go to the Couples meeting lounge. You can't miss it. Give your name and they will put you on the shuttle to CN. Enjoy!