309.
(13) The wedding should be celebrated with festivity. The reason is that the love which the bride and bridegroom felt before the wedding then descends into their hearts and radiates from there throughout
their whole bodies, so that they begin to feel the delights of being married. As a result, their minds are filled with festive thoughts, and as far as is permissible and respectable, they also
let themselves go in festive behavior. In support of this, it is useful for the festive feelings of their minds to be shared by others, and for them to be introduced into the joys of married love in this way.