The export of tobacco and alcohol from Mexico is free, it's another matter how much you can take away on your own, and no one has canceled the extra charges for excess baggage. As a rule, free of charge, depending on the airline, it is allowed to transport about 20 kg of luggage in the economy class and about 30 in the business class. However, it is worth remembering that in Russia there are restrictions on the importation of alcoholic beverages, all that is more than the norm (which is 2 liters per person) will need to declare and pay a fee.