The guest list for the wedding rehearsal dinner can consist of anyone the bride and groom want to have at the dinner. According to etiquette, the groom's parents should host the wedding rehearsal dinner.
The wedding rehearsal dinner can serve as a time for the bride and groom to catch up with friends and loved ones so that they are more relaxed during the actual ceremony and reception. Some families choose to have a relaxed and casual rehearsal dinner where the families can get to know each other. This is ideal if the wedding ceremony is formal. The actual wedding rehearsal is only for the wedding party and the parents of the bride and groom.