What's life after marriage?

In two months time, I'll set to tie the knot with my girlfriend whom I've been working with in a foreign job for 5 years. We have a lot of ups and downs together but still, we managed to become stronger everyday. We already planned everything once we become a married couple, even invested a lot to our future house. But I still have a question, and that involves life after marriage. What is it like after being tied for eternity? What is it like after exchanging vows? I have no doubt about her, it's just that I'm not that prepared well in becoming an ideal husband or brother. Can someone share their experiences or testimonies to me? I would really appreciate your responses.