public Dinner Find(int id)
{
    using (var connection = MvcApplication.GetOpenConnection())
    {
        var sql = @"SELECT * FROM Dinners WHERE DinnerId = @id
                    SELECT * FROM RSVP WHERE DinnerID = @id";

        Dinner dinner;
        using (var multi = connection.QueryMultiple(sql, new { id = id }))
        {
            dinner = multi.Read<Dinner>().FirstOrDefault();

            // Dinner Exists
            if (dinner != null)
            {
                dinner.RSVPs = multi.Read<RSVP>().ToList();
            }
        }

        return dinner;
    }
}