We did our reservations on-line as well. Here's what we got.
Right after making the reservations, we received an itinerary that showed airline info, room info, ticket info and rental car info. It also included an invoice showing our pay-off balance. After we paid off the trip a few months later, we got another itinerary showing that our balance was paid.
About a month ago (our trip is next week), we got all the final paperwork. It showed confirmations for all the elements for the trip (room, tickets, airline, etc.). We also got luggage tags from Disney Travel Company.
Your park tickets will be on your room cards when you check into your resort. If you got the Dining Plan, your dining credits will also be on your room card. Our
MVMCP tickets came separately. You should probably expect to get your itinerary in the mail. Make sure you check it over carefully to make sure everything is the way you want it. When we received our final copy, we noticed our flight times had all been changed. We had to call American Airlines and move things back to the way we wanted them.