Hello, Salman. Getting married on 7 November will not automatically extend your tourist visa beyond 18 November. You must have a separate legal basis to stay; the marriage certificate alone does not give you permission to remain after your authorised stay expires.
If your future wife is a Russian citizen permanently residing in Russia, a newly registered marriage normally does not immediately qualify you for a quota-free temporary residence permit (RVP). Article 6 of Federal Law No. 115-FZ now requires at least three years of marriage, or a common child born or adopted in that marriage. Other independent grounds may apply, but simply applying or booking an appointment does not automatically legalise your stay.
A practical option after marriage is an ordinary private visa as the spouse of a Russian citizen. This visa can be issued for up to one year, with permitted stay throughout its validity. However, this does not mean that your current tourist visa can automatically be converted into it inside Russia. The normal route is through a Russian consulate abroad, using your wife's application and your marriage documents.
Contact the local МВД migration office now, before the wedding and before 18 November. Take your passport, visa, migration card, registration and information about your future wife's citizenship. Ask whether you have an independent ground for a residence permit or for lawful extension without leaving Russia. Also contact the Russian consulate where you could apply for the spouse visa and check its requirements and appointment availability.
If no lawful extension or residence basis is formally available before your authorised stay ends, you must leave in time and apply for the appropriate visa abroad. Do not rely on a promise that marriage alone allows you to stay. This is the safer way to avoid an overstay and problems with a future return to your wife.
