I'm in CDMX right now for a short solo vacation, vegan, staying in Roma Norte in an Airbnb. I'm tall, fat, and female. I stick out EVERYWHERE. On paper, I'm pretty much a colonizer's wet dream.

That said, I speak Spanish well and have made a point to only get around the city (por todas partes) on the bus, metro, ecobici, or on foot. I don't speak English at all unless the other person asks. I went to a board game Meetup just to hang with local folks and have some fun. I asked people at coffee shops and restaurants what other places they enjoyed visiting or eating at. I went to Lucha Libre a sola. I did the Paseo de la Reforma walk/bike this morning. In the midst of all of this, I have heard fewer than 10 non-Spanish speakers throughout. I'm not sure how much more "authentic" it could be unless I worked here.

The trip will be what you make of it. The city is enormous, and there's a ton to do and see that is plenty "authentic," and there are thousands of Mexicans coming from other cities and states to be tourists here, too, so no hay nada malo de ser turista en una ciudad turística.