If you're both virgins, it will be awkward at first and likely painful for her. Try to find both your comfort levels and don't try to push hers, or think you have to experiment with everything you can imagine the first night. You have a lifetime to do those things, so don't wear it out. All I'll say is just always remember, it is both of you - not just you getting what you want. This goes for the rest of everyday marriage as well. But TALK to each other. And hopefully you've both discussed any plans about children before now. Whether or not you decide to use contraception needs to be discussed before this weekend.