Congratulations! 
And welcome to GS. Just noticed it was your first post.
Make sure you are very clean before marrying.
Take a laxative too.
Glad to know you have no intention to go to women spa!
J/K
Dear friend,
Just take a nice shower, shave off necessary areas, use something for pleasant odor. Obviously you will not be going to spa forever every day or every few days. You are who you are.
That’s all. You are good to go. Let the nature take its course.
The women are just as worried as men are. So relax. Don’t ruin the night on being so meticulous.