My future Mother In Law wants to host a large rehearsal dinner, and I envisioned a smaller more intimate dinner with only immediate family and wedding party. She wants to invite all her brothers, sisters, and their families which I dont want. I would much rather the extra $ go towards the wedding than the rehearsal. How can I nicely tell her I want a small dinner and we'd appreciate any extra $ they were planning to go towards the wedding? Or is it really their decision since they are offering to pay? Help!