I had the honor of attending a Russian wedding last year.
My former exchange student was married in Yaroslavl.
Russian engagement rings are in reality just plain wedding bands of gold, without diamonds or stones, and they wear them on the RIGHT hand on the finger next to the "pinky".
The reception takes place at a restaurant/cafe or at groom/bride's home, the last option is more popular as it's more affordable.
The biggest concern at the wedding is to have enough liquor.
The more cars participating in the wedding train, the more proud the couple will be.
Usually they ask all their friends and relatives who have cars to join the ceremony.
The couple is supposed to apply in writing to the department of registrations asking to register their marriage.