Father's Day weekend means all-ages fun on the South Fork:

FATHERLY FUN WITH FALLON Celebrate Father's Day weekend with a famous dad: Jimmy Fallon, "Tonight Show" host, former "Saturday Night Live" star and Hamptons regular will be hobnobbing at Harbor Books in Sag Harbor 11 a.m. Saturday to read from and sign copies of his children's book, "Your Baby's First Word Will Be Dada." Book purchase required (20 Main St., 631-808-3401).

advertisement | advertise on newsday

SLOPPY PARTY The Sloppy Tuna in Montauk hosts an all-day blowout Saturday to celebrate the spot's fifth anniversary. Expect an afternoon enlivened by costumed entertainers and DJ Jason Drazen, followed by blasting confetti guns and music by DJ Blandon at night. No cover, no dress code (148 S. Emerson Ave., 631-647-8000, thesloppytuna.com).

See alsoHangin' in the Hamptons: June 2015

FAMILY FRIENDLY The Children's Museum of the East End in Bridgehampton hosts its third annual music fair 10 a.m.-noon Saturday, featuring interactive audio exhibits, musical instruments for play, face painting and -- of course -- live music. It's free, but reservations are recommended, as space is limited (376 Bridgehampton-Sag Harbor Tpke., 631-537-8250, cmee.org).

BENEFIT CIRCUIT Bandleader Tito Puente Jr. brings Latin jazz to the Ellen Hermanson Foundation's 20th Anniversary Summer Gala, 6:30 p.m.-10:30 p.m. Saturday at the Bridgehampton home of fashion photographer Steven Klein. Tickets from $400 ($175 ages 30 and younger), ellensrun.org . . . Stony Hill Stables in Amagansett (268 Town Lane) hosts a benefit for its nonprofit scholarship program, 6-8 p.m. Saturday with pony drill team performances, a jumping demonstration, barrel racing and a dressage exhibition led by U.S. Dressage Federation gold medalist Wick Hotchkiss. Tickets are $125 or $200 for a pair (631-267-3203, email info@stonyhillstables.com) . . . Tour a range of private gardens in Southampton at the Animal Rescue Fund's 29th annual garden tour, 11 a.m.-5 p.m. Saturday with a cocktail party following. Tour-only tickets are $85, $175 includes cocktail party (631-537-0400 ext. 219, arfhamptons.org).