Treasure hunters: The Treasure Hunters Roadshow will be in Federal Way from 9 a.m. to 6 p.m. Sept. 19-23 at Best Western-Evergreen Inn and Suites, 32124 25th Ave. S. (at I-5 and South 320th Street). Local residents can talk to world-renowned antique and collectible experts at this free event. To learn more, call (217) 726-7590.

Symphony soiree: An Indian Summer Soiree fundraiser showcasing the Federal Way Symphony will run 7 to 11:30 p.m. Sept. 23 at Twin Lakes Golf and Country Club. Enjoy hors d’oeuvres while dancing to live classic rock by The Pop Offs. Cocktail attire and no-host cash bar. Tickets are $50 each. RSVP by Sept. 15. Contact: symphonysoiree@aol.com or (253) 529-9857.

Halloween at Wild Waves: Starting Sept. 30, Wild Waves Theme Park transforms into a “Scream Park.” Guests have the opportunity to experience the park after dark. Ride your favorite rides in the dark, wander through The Scream Factory Haunted House (for older kids), dance at the Thriller Wave Pool Dance Party and catch one of the thrilling entertainment shows. This year’s Fright Fest will be held weekends in October, starting on Friday, Sept. 30, through Sunday, Oct. 30. Tickets are $24.99 plus tax at the gate (cheaper online). There is also a kids area and trick-or-treat path. Visit WildWaves.com.

Evening with the Stars: Federal Way Chamber’s Advancing Leadership program will host a dinner and auction from 5 to 7 p.m. Oct. 1 at the Weyerhaeuser King County Aquatic Center. Tickets are $15 each, with sponsorships starting at $250. All ages welcome. Advancing Leadership provides comprehensive leadership training to adults and youth, providing Federal Way with trained, informed, connected leaders who reflect the diversity of our community. Contact Amye Bronson-Doherty at amyeb@federalwaychamber.com.