Whether you have guests or are a guest, a little upfront communication can work wonders in keeping everyone happy. For example, before bringing Fido along on a trip, be sure to ask whether it's okay to bring pets. Likewise, if you don't allow pets in your home, let that be known upfront as well.
Don't forget to discuss arrival and departure times. Arriving at 2 a.m. when your host has young children is probably not the best way to begin the festivities.