Christmas Eve dinner in Guatemala City

[t19103]

Hello,

I am staying in zone 10 for one night before heading out to the countryside. I arrive about 2 pm from NYC. What are my options for a good traditional meal on Christmas Eve?

I am willing to take a cab or bus or walk from where I am staying. Will anything be open? It simply has to be good and authentic. I don't need fancy or even sit down.

Item suggestions are welcome as well.

Thanks!!!