Mall of Millennia, is the nicest of the 2 indoor style malls. Plus there are quite a few restaurant options, along with some other stores in like a strip mall easy walking out to them.
While the Florida Mall is closer to Disney, there has been alot of problems with safety. Not just at night but during the day as well. A couple of my girl friends went shopping there, and when they left Penny's to go get in their car, she said she noticed some men just standing around under the tree's, she said that the hair on the back of her neck stood up, and she told her friend oh I have to go to the bathroom, so they quickly walked back inside. She said the manager called for security, then the police and that the found 8 cars broken into, and my friends unfortunately was one of them. They got her gym bag which was in the floor on the back seat. If they would have walk to the car they more than likely would have walk up to them breaking into her car.
If you are looking for a outlet mall Orlando International Premium Outlet at the end of I drive would be my choice, a lot more stores, fair food court, plus they have Panera's, as well as a sit down restaurant "Vinito Ristorante" which we have had lunch at a few times and dinner once over all pretty good. There is a bass pro shop across the street.