I think it’s madness to proceed. You’ll either be heavily pregnant (the very most they’ll allow you to go over is 40 wks plus 14 days) so literally due on the wedding day. Or you’ll have a newborn. When I had my first I couldn’t really walk well or even sit down for a week. Heavy bleeding, night sweats, bleeding nipples, cracked, open nipples, leaking boobs. Infected 4th degree tear. No sleep. I remember coughing very gently when I had a week old baby and felt a gush. To this day I have no idea whether it was pee, pooh or blood, because the pads I was wearing were so gross, I couldn’t tell.
I’m not telling you this to put you off but why would you want to get married so close to the due date? You have no idea what your body will go through. It can be brutal. I had to attend a wedding with a two week old baby and I just couldn’t figure out what to wear and was taking pain killers and antibiotics. Pre baby I was a size 10, two weeks after baby I was a size 18, I just hated what I looked like at that wedding and I was only a guest.
With my other babies I had c sections which were easier to recover from, but still no way up to being a bride and life and soul of the party.
Postpone it all by a year. It’s still miles away, the suppliers won’t be out of pocket.
If you intend to BF you’ll be naked waist up for the best part of the first three months too.