Who attends the rehearsal dinner? Immediate family?

 If space and/or finances are limited, only the members of the wedding party need to be invited. But, the guest list usually includes your attendants and the spouses of married attendants (or live-in partners), the immediate family on both sides (parents and siblings and their partners), parents of children in the wedding (young children are optional), and the officiant and his/her spouse. Most people also include out-of-town guests arriving for the wedding (or plan some other function for them to attend the night before the wedding). If you want to expand it, you can include grandparents and special aunts/uncles too. The purpose of the rehearsal dinner is to have an opportunity to visit and relax with those closest to the bride and groom, so you can decide how many people that includes. It can be anywhere from a formal sit-down dinner to an informal buffet, or a backyard barbecue or lasagna party. This is also the occasion where most bridal couples give the gifts to their attendants.