What you need to do with the WDW tickets is go to the turnstile as if you had a DL ticket. Let the CM know you have WDW tickets. They will call someone over who will take the ticket and verify days left. They will return with a 1 day DL ticket. Be warned - this can sometimes take 10-15 minutes. So if you want to head right over the Nemo there will probably be a 2 hour wait by the time you get in and over to the line.