The 19th Annual All Senior Picnic is a fun event for adults of all ages. Join us for catered lunch, live entertainment, door prizes, informational booths, and more. Held INDOORS at the new Southridge Sports & Events Complex in Kennewick. Admission is $7 in advance or $10 at the door. Admission can be purchased at the Kennewick Senior Center, Pasco Senior Center, Richland Community Center, W. Richland Senior Center and Southridge Sports & Events Complex.