A group wedding is the ceremony in which a number of new couples are united in marriage in the same day at the same place.

集体婚礼是指若干对新婚夫妇在同一天、同一地点举行的婚礼。

youdao

The Rhode Island legislation states that religious institutions may set their own rules regarding who is eligible to marry within the faith and specifies that no religious leader is obligated to officiate at any marriage ceremony and no religious group is required to provide facilities or services related to a gay marriage.

NPR: RI On Way To Be 10th State To Allow Gay Marriage