A lively wedding is mainly supported by money, which is a bit vulgar, but it is also true. Then again, since the wedding is held in a different place, it is usually mainly to take into account some wedding customs of the other party, see what their local marriage practices are, and try to satisfy them. The most important thing is that the parties are in each other's home and must not get drunk. Although they are not drunk, if you are drunk, you are an alcoholic in the other family, which will make people very uneasy. Then there are some manners and etiquette problems.