We finished 90% of our shopping before even checking into the hotel later in the day. Glad we went early because the crowds and lines stat to dominate this place later in the afternoon.
Be prepared with a map because it is a bit maze like and easy to become disoriented if it is your first visit. The store indexes do not have a "You are Here" star on them. So you may likely find yourself along with a group of others trying to figure out your location.