Yeah, don’t bother during the day because most of it’s closed. The point of a night market is to see it in all it’s lively colours and smells, at night. While it was still interesting to peruse during the day, the night version was far superior.
When I was growing up my dad used to travel to Asia on business. He had told us stories of the night markets and I remember him telling us about Snake Alley (maybe it was the name that made it memorable). I had a very active imagination as a child (to be fair, I still do) so I am not sure exactly what stories my dad had told me and what exotic, carnivalesque freak show my brain turned it into (I also read a lot of Stephen King as a kid). Part of me was disappointed to find out that Snake Alley was just another (regular) night market; I might as well be honest. Granted there are a couple restaurants serving snake (they won’t let you take pictures) and another that serves turtle. Other than that, it’s food carts and knick knacks and items that will be broken by the time you get home (night market stuff).