This happens whenever I go to my in-laws house. There are too many people talking and speaking very loudly. I came from a small family where things were quiet so I have a difficult time handling the large groups at my in-laws.
I feel extremely uncomfortable with people who talks too much and in loud voice.Try my best to leave the place.If it is still not possible,I look towards my watch ,cellphone etc to divert attention.Sometimes I get angry and express it through my action and face but not through mouth or hands.
I must say, most of the time I get annoyed with such people. Recently I was sitting with my friends in a mall, and one guy was talking so loudly on his cellphone. Almost everyone was noticing him and listening to his talks. This is so pathetic.