Lori Mack B.
Google
We arrived at the museum an hour and 15 minutes before it closed, but it turned out that was the perfect amount of time.
It doesn't have a ton of blockbuster artifacts (especially if you've already visited, and are implicitly comparing it to, the Museo de Antropologia in Mexico City...which was the case for us). However, what it DOES do quite well is to paint a picture of how the ancient Maya actually lived, how their society was impacted and shaped by the Spanish conquest (such as the role of the henequen trade), and how that all connects to the lives of the modern Maya.
That throughline is essentially absent from the CDMX museum; in fact, I think the Gran Museo del Mundo Maya feels more like an "anthropology" museum, while the Museo de Antropologia feels like an archaeology museum, not anthropology.
Both are worthwhile for their own reasons!