The Long Island Bluegrass Festival will take place at Tanner Park on Kerrigan Road , near the Great South Bay, in Copiague, on Sat., Aug. 16, from noon to 8 p.m. Presented by the Babylon Arts Council and the Town of Babylon, the festival will be headlined by Dan Paisley & the Southern Grass and also will feature performances by Buddy Merriam & Back Roads, James Reams & the Barnstormers, Too Blue, Acoustic Electrix, Free Grass Union, Michael Daves and Blue Detour. Admission is $10; children under 12 free..For more information go tw www.baby­lonarts. com or call 631- 587-3696. Babylon Town Hall, 200 E. Sunrise Highway, Lin­denhurst. For info., call 957-3102. •Parents of Teens & Adolescents Support Group: 6 p.m., Amityville. Must call for detailed location 226-3900. •Breast Cancer Support: 7-8:30 p.m., Southside Hospital, 301 E. Main Street, Bay Shore. For info., call 968-3477.