We can always politely ask the "bratty" person to be nice. And if he chooses not to be, and it is warranted, we could have reported. Also, the "bratty person" could have been put on Ignore.
If we are with a group of people, we can also have looked for another instance (if the place was busy enough).
Barring all of that, I'm sure the game could have been enjoyed.
We're still waiting for a home to get on Home...