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Civil marriages are the only type of legal marriage in Turkey. However, you can have a religious ceremony, but that alone is not a legal marriage.The only type of marriage that is legal in Turkey is a civil marriage. You may have a religious ceremony, but it has no legal standing in the country.
Marriage.
Yes, it is.
This is a marriage ceremony that is performed by a judge not in a church, but is still legal.
There is no reason to avoid having a legal marriage before a religious ceremony. Many couples do this in order to gain the marriage benefits.
Of course not. In Western countries you can only be married to one person at a time. The "wedding ceremony" would be a sham.
No, the license is required.
The marriage ceremony does not need to be religious in nature, just legal and sincere.
No, it would not be legal. The license must be issued by the country, Mexico, where the ceremony is to take place.
Yes, unless the educational facility has issued a mandate that video recording is not allowed.
You will have to tell the officiant. They are not likely to perform the ceremony without knowing it is legal.