Most likely, she's nervous about the night as well, though she may be looking forward for to it too! I think the best thing is not to make a decision about whether or not you're going to do it on the wedding night. Just talk to each other, help her unpin her hair, get to know each other, order some room service (since most likely you'll feel quite hungry), chat, give her a gift, maybe even bring some item that is important to you that you can tell her about, to start conversation. If the two of you are cuddling and feel comfortable going further, then go for it, if you don't, you've got a lifetime to enjoy yourselves. Don't rush it.
Totally agree !!