Aventura Mall is much larger than I wanted or needed for shopping the day that I went, however I can't imagine anyone needing something and it not being somewhere in this mall. It's unusually clean and nice for a mall. It was somewhat busy on the day I was there, but not overly crowded, but it was mid-week and in the morning. I am not a person who likes to shop, especially not in malls, but it is necessary now and then.
The only negative for me, especially since it is such a large mall, is that I never saw a store directory, and I really did not have the time or the desire to wander aimlessly around the mall. However, if I were to want to do that, this would be the place to go.