The present invention provides an accessory retention device for using on bench type seating or tables made from planks. The device holds not only a pole, but also holders for drinks or other personal items. The device is adjustable to fit a variety of stadium seating, using the device adjustable mount system, which allows the mounting pieces that clamp on to the stadium seating to expand and contract for a secure fit. The device also allows the user to select what type of pole mounted item to insert into the support device, as the device is capable of adjusting to accommodate different types and sizes of poles, such as umbrella, flags, rods, etc. The device is compact, portable, and easy to carry with a built in handle.