All that depends on where you're going in Mexico. Mexico has never had any vaccine or testing requirements. They were the only country that never closed, and never had any restrictions to enter. But required masks. Yes, they recently lifted the mandates in regard to wearing masks in airports and public transportation "overall", but private operated stores, clinics, hospitals, hotels and restaurants can have their own restrictions. Therefore, the entire country is NOT mask free if that's what you're asking.