My girlfriends are getting married in the state they live in because it is legal there (New Hampshire and they are from Florida). They are only inviting immediate family to the wedding and having dinner afterward, not a formal reception. So they are coming home to Florida where we all live and having a party. It's also not a formal reception, just a get together at a fun diner and the entire family is invited. Finger foods and dessert to be provided, cash bar. They are registered for a honeymoon. What is an appropriate amount of money for this type of unique situation?