My parents have given us $10k. So far we have booked the ceremony/reception and my dress with that. Not much left. FI's mom is paying for invites and we are going to see if she can help with the photographer costs.
My father travels a lot so fortunately he has been saving his points. He has enought points in airfare to fly roundtrip via SouthWest and rooms at the Hilton for FI, me, mom, dad, brother, and his GF. We really lucked out on that one.
So we have to pay for whatever is left including honeymoon, rings, FI suit, flowers, and OOT bag goodies.