Attire can range from shorts to evening dress.
Prices cannot be beat. Fresh fish tacos at the fish market are up to a whooping 75 US and that includes all the condiments you will need and radishes. A refreshing treat on a hot day is a peeled mango or a fruit cup from one the numerous street vendors. I tend to stick with the ones that are set up in on place, not the rovers. As far as tacos and and other cooked items, that's up to you.