I understand your funds to be liquid. I mixed my currency with tap water, blended it good and marked the jars with the totals. Though, since you're traveling with liquid assets it has to be carried in your checked baggage.
Do you have Medicare or CanadaCare? Care de Mexico? If so, travel insurance should be sufficient for repatriation or to fly home for more intensive care.
You can get hurt if you don't pay attention just walking around, tuk tuk anyone? Remember to simultaneously look up as to not hit your head, while looking down as to not trip on uneven pavement. Oh my! Is that a scooter driving the wrong way down the road or on the sidewalk? Have something available.