So we are about to set a date (November 22nd) and literally put money down on our church tomorrow when my fiance's sister calls and tell us that she is pregnant (very early). She said that if she is, her due date would between middle of October to middle of November. My fiance has 3 sisters but he is definitely closest with this sister. And she asked us to move our date so she could be there. But here are the issues: my fiance has 2 different (possible) trainings in the fall- one lasting all of Sept and Oct which he will be out of town and will not get leave, and the other starts in December to March which he could get leave in the beginning of it but that's my birthday and we don't want to have the wedding on my birthday. Also, their other sister is getting married in August. And getting married earlier will put a huge financial burden on his family with traveling to 2 out of state weddings and helping pay for each, not including schedules and time off.
So we don't really have any other time to have the wedding. We can't wait until next year because he probably won't get leave after December and then he will deploy. And neither us want the "small, intimate" wedding where we only have 25 guests, we want a real wedding. He is completely torn because he really wants his sister there but we don't really have flexibility in our date. So what do we do? Or how do I approach this with him?