We are considering coming to the Expo in July with our 20 year old son who is autistic. He won't be able to stand for the whole time and will need an area for him to take breaks... (We know the hotel is sold out so we can't have a room close by.) Is there any places inside the hall for him to sit down or right outside the hall in a lobby area for him to sit and get on his laptop??? Do they have wifi at the hall???