Hello! Just wanting some advice!

aWidowsLove
I'm 16 and getting married in April. 
Before everyone wants to talk me out of it, I'm extremely mature and know how serious marriage is. My fiancé is 23 and we havd the same maturity level. We both have jobs that make good money and have solid plans for where we will live, so on so fourth. 
What I was wanting here was advice from women who have been married. I'm willing to listen to all advice. Anything you think that's important in marriage or good to keep in mind would be much appreciated! :)