I'm so excited for you!!! It's a good day when one of our kind gets to undergo that magical transformation into a metal mouth! I hope you'll take the time to share your thoughts and feelings of the experience!
I remember before I got my braces I used to press the flap of flesh beneath my top lip vertically between a gap in my top front teeth, and very soon after getting my beloved oral hardware realized I could no longer do this, on account of there not being enough space between those teeth, to say nothing of the massive edgewise arechwire blocking it completely.
This very small microcosm of "cant do this thing because of my braces" THRILLED me even more! There will be a number of little things that are different, will feel different, and things you CANT do because of your braces. EMBRACE those! Relish in them!
All the best!