The best tacos in Cancún are rarely in the Hotel Zone — they're downtown, usually from a stand or small storefront that's been perfecting one thing for years.
What to look for
A busy stand with a fast-turning grill is generally a good sign — high volume means fresher ingredients and less time for anything to sit around. Tacos al pastor (marinated pork shaved off a vertical spit) is the classic order almost anywhere in Mexico; regionally, look for cochinita pibil tacos too.
Where to look
Parque de las Palapas draws a rotating set of stands, especially in the evening, and is a good low-commitment place to graze a few different options in one visit. Beyond that, following where locals queue is a better signal than any list — including this one.
Basic street food safety
Choose stands with visible turnover and clean prep areas, drink bottled or purified water, and go easy the first day or two while your system adjusts — not because street food is inherently risky, but because any new food environment takes a little acclimation.