​Mexico Legal Marriage Requirements:
• Valid passports
• Tourist card (fill out online)
• Must be in Mexico four business days prior to wedding
  (weekends and holidays not recognized in Mexico do not
  count)
• Blood test must be taken in Mexico
• Birth certificate that is Apostilled 

Mexico Symbolic Wedding:
• Valid Passort
• Tourist Card(fill out online)
• Must be in Mexcio 2 to 3 days prior to wedding
• No blood test needed