Kind of related story:
When I left for BMQ, my wife was ready to pop with our first-born. As I didn't want to create ripples in my training, I informed my staff of the situation, but told them that we had prepared for it, and I didn't want to miss any training. Unfortunately, I ended up getting sent to WFT (Warrior Fitness Training) and my new Sgt caught wind of my situation. He told me that my training wouldn't be affected, and that I was to write a memo asking for 1 day leave to be there when she was induced.
When she had the baby the next day, I told my Sgt that I didn't think that I'd need the request anymore, because she had delivered. His instructions to me were exactly this:
"Sit down and write a memo requesting the day anyways. As well, request permission to carry your cell phone." When I finished the memo, he told me to wait it out for a few minutes. He came back in 15-20 minutes and said, "Who can you call to come and get you?" When I looked at him oddly, he told me that not only was I going home that day (Thursday), but I didn't have to be back until Monday night, and until then, I was to carry my cell phone with me at all times, and if I was questioned about it, they were to speak to my OC.
Apparently, he had gone, not only to my WO but to the OC and championed my case. My WO had suggested an extra day of short leave, and the OC had said that I should have been carrying my cell with me the entire time that I had been with WFT until that point.
Long story short, if you discuss your intentions with your CoC, you might be able to walk away with everything you wanted or needed. Keep in mind, though, that sometimes, they really can't accomodate all of your requests. I had a MS tell me at BMQ that you can request anything you want in a memo, but it'll end up being the CF that decides if you can get it or not.
So, anyways, back on topic...
I would wait for BMQ to be finished before you get married. If you end up getting hurt, or recoursed, then maybe you can get the leave to do it, but it would definitely be worth your while to wait it out.
Good luck with it, bud.
Rev