I got engaged this past October. Immediately, I sat down with one set of parents and they said that they would pay for the wedding for us. I asked for a total budget of what they could afford to pay from the start and they said they wouldn't give me one and to be reasonable. I fell in love with a vineyard near where I went to school and the cost was a little high. I went to my parents and they said it was fine. Since then, I have gone to them with EVERY expense and they have approved it all. Suddenly, we are three weeks out for the wedding and it's too expensive for them (as a note: final totals are looking at about $24K, more than I thought things would be when I got engaged but less than national average and originally approved by the parents). Just about everything is set and all that's left is to pay the final bills.
How do I fix this so that I don't have to cancel my wedding three weeks out? (and it's only 50% paid for at this point!)
UPDATE: My fiancé's mom has indicated that she would be willing to take out a loan to help cover the remaining cost but I don't feel super comfortable letting her go into debt (even if we are supposed to pay her back as if it was our loan) for our wedding. Should I just let her or tell her no?