What are the cultural aspects of midsummer nights dream?

The idea of having "entertainments" on your wedding day after supper is an indication of a wedding custom one does not see often these days. The behaviour of the audience during the play (constantly interrupting and cracking jokes about the play) shows that audiences in Shakespeare's day were vocal and audience interaction was common.

Bottom's statement that he has a reasonable ear for music "Let's have the tongs and the bones!" indicates that such primitive instruments were still in common use in Shakespeare's day, but were not very highly thought of.