In the Orthodox and Conservative Jewish faith, weddings cannot be held on the Sabbath or many other religious holidays. Rather than requesting "the honor of your presence," as most invitations read, a Jewish wedding invitation will invite guests to "dance at" the ceremony.
And the invitation itself is two-sided, with one side written in Hebrew and the other in English. While standing under the Chuppa, a canopy meant to provide sanctuary from evil spirits, the groom stomps glass wrapped in cloth to symbolize the destruction of the Holy Temple in Jerusalem.
It also symbolizes life's mix of joy and sadness.