A: When it comes to any post-wedding festivities, there are no rules. Time is of the essence, though, so you need to address the issue now. If you were expecting his parents to pay, have your fiancé ask them directly. If they decline, you'll have to figure out another plan, and perhaps host the gathering yourselves. The brunch menu can be as simple and inexpensive as bagels and coffee for your nearest and dearest and the out-of-towners.