Congrats!!! I Hope you have found the person you will love and cherish forever!:D Dont listen to marinecorps cause if you know 100% that your for each other than go for it! i have two friends who got married at your age and are very happy together. Ask your parents or will-to-be parents in-law, because if they ever got married they should be able to help.
I believe I would shack first for about 30 years to see how it goes living together. as for the cost, I forgot what it cost me to get married at the courthouse, but then again, I be gettin up in the tooth.
Thats so cool!! Congrats!! :D I would ask your parents or the parents of your fiance since they probably have been married once and can give tips and stuff. I would seek a marriage councelor too to make sure your man is the right one for you and to help gove you tips for your marriage. Congrats again!!