Firstly, the website said the hours were 9 - 5, but when we arrived at 9:30am on a Monday, less than 20% of the vendors were present, and only half of those fully set up. We thought we would wander and buy food for breakfast, but for the first half of our wandering, nothing was open. Eventually we found a stand just warming up the grill with Poffetjes, and then one with fresh orange juice and finally bought some berries from a produce stand. Most of the stands were not geared towards tourists, but locals. Lots of produce, fresh fish, meat, cheese, spices, toothpaste, deoderant etc. If we were spending a week in the city, we would shop here, but as a tourist, we didn't need most of what was there.
It is possible that the market had more to offer later in the day (like fresh food from stands!) but it was hard to know having gone so early. I would try again on my next visit, but this time go closer to lunch, when hopefully more is open.More