Visit this site for more information on Plum Fun Party Rentals. At Plum Fun Party Rentals, we can help you plan a great fall birthday party. We have rental units and party packages to suit your needs. Fall is a great time to host an outdoor birthday party. The weather is still warm but the changing leaves provide a natural beauty that doesn't happen any other time during the year. With the many fall only activities to do at this time of year, party guests will have a great time celebrating their host's birthday.