Our youngest is above 2 so technically counts in the room head count, we booked at little mermaid room which only allows 4 per a room although we will be a total 5. Me and hubby, 2 daughters and the the 2 year old. Now it just occurred to me we probably can't use DME b/c we only have 4 people on room reservation. Can any offer advise on this? Can you pay to add someone to take magical express??