Fifth Harmony: The award-winning, pop powerhouse girl group with the platinum-selling Worth It make a stop on their summer tour with openers, Debby Ryan and The Never Ending, Natalie La Rose and Bea Miller. 7 p.m., Ruth Eckerd Hall, 1111 N McMullen-Booth Road, Clearwater. $33.25-$53.25. (727) 791-7400.Margarita Wars: More than a dozen mixologists from area restaurants including compete to create Tampa Bay's best margarita. Includes 17 margarita samples, People's Choice voting and Mexican-inspired food. Upgrade to VIP for an extra hour of line-free sampling, a Margarita Wars tote bag and two draft beers. 7 p.m., TPepin's Hospitality Centre, 4121 N 50th St., Tampa. $50 advance, $60 day of (general); $75 advance, $85 day of (VIP). (813) 739-4879.Pete Davidson: The young comedian was a series regular on three MTV programs, Guy Code, Wild 'N Out and Failosophy. 8 p.m., Improv Comedy Theater, 1600 E Eighth Ave., Tampa. $22. (813) 864-4000. Author Signing with Dick Jacobs: The former chairman of the board of trustees for Morean Arts Center, will sign copies of his book Wanderlust, which documents the challenges humans must consider as we define ourselves and our relationship to nature and the environment. Proceeds from book sales benefit the Morean Arts Center. 6 p.m., Morean Arts Center, 719 Central Ave., St. Petersburg. Free, $40 books. (727) 822-7872.Rocky Votolato and Dave Hause: The folk singer-songwriter and punk-rock musician co-headline a tour with opener, Chris Farren. 7:30 p.m., The Local 662, 662 Central Ave., St. Petersburg. $13.50. (727) 258-4829.Jamie Kennedy: The Malibu's Most Wanted star has an impressive film repertoire, including Baz Luhrmann's Romeo and Juliet, Bowfinger, Scream and Scream 2. 8:30 p.m., Side Splitters Comedy Club, 12938 N Dale Mabry Highway, Tampa. $20-$25. (813) 960-1197.KIDS AND FAMILYFree Days at Glazer Museum: If you've got a Hillsborough County Public Library card, you and up to three guests get free admission to the museum. 10 a.m., Glazer Children's Museum, 110 W Gasparilla Plaza, Tampa. Free. (813) 443-3861.Book Time at Brooker Creek: Program includes story related crafts, games and other hands-on activities. Best for ages 3 to 5. 10:30 a.m., Brooker Creek Preserve, 3940 Keystone Road, Tarpon Springs. Free (registration required). (727) 453-6800.TO WATCHMarried, 10:30 p.m., FX. Oh, this should be "fun." Russ (Nat Faxon) and Lina (Judy Greer) go on separate dates. MORE TO EXPLOREFind the latest movie reviews at tampabay.com/things-to-do.