Marrying without her father’s knowledge

I am looking at a lengthy engagement period before my fiance and I am able to financially marry and live together. We would both like to have a nikkah during our engagement so that we are not sinning when we are intimate with each other. However, both of our parents are against this and want us to wait until our marriage reception which is in a year or so. Is it allowed for us to get a nikkah in secret? My second question is, is it ok for us to repeat the nikkah ceremony again during our reception (since our parents won't know of our first nikkah)? Is a double nikkah permissible to the same person? Your help is much appreciated.

Praise be to Allaah.

You will find a detailed answer to your first question under Question #2127. Know also that you can never have a proper marriage contract without your father’s knowledge and consent. Indeed, he or a person designated by him must marry you to the man who has asked for your hand. Once the marriage contract has been made according to Islamic law, meeting all the required conditions, then there is nothing wrong with having more than one waleemah (wedding reception) in more than one place. And Allaah is the source of help.