I can see what people would love about this flea market.
Maybe I am just old school. I like my flea markets to be 75% antiques, 25% new cheap stuff. This one is 90% new cheap stuff, and 10% old stuff. And lots of tasty, traditional Mexican street food! That part is AWESOME!
With that said- If I was looking or a fun place to spend a day, eating, finding weird items, especially with visitors. This could be good. It can be a little overwhelming, as there are 1500 vendors.
If you are going, bring a pocket full of cash. No one takes CC's here! And wear sunblock! - Have FUN!