Tourist season will go from crazy to absolutely insane in the span of one weekend. The family- and pet-friendly Sea and Sand Festival on Folly Beach packs a lot into one weekend, and attracts between 10,000 and 15,000 visitors every year. Saturday, head to Center Street for a street party featuring live music by James Justin & Co., Fuller Condon & the V-Tones, the Shakin’ Martinis, Sweet T n’ A, the Folly Beach Reggae Allstars, and the Folly Bluegrass Society. Add to the mix a 5K run/walk, a silent auction, and well over 100 food and art vendors, and you’re set to eat, drink, and shop ’til you drop. Surfing fans will flock to the Tides Kickoff Classic, which is also this weekend. You can watch the surfers compete from the comfort of the Tides’ beach deck starting Saturday at 8 a.m. The festival finale begins Sunday morning with the final rounds of the Kickoff Classic, followed by the Mr. John’s Beach Store Sand Sculpting Contest. There’s more live music by the East Coast Party Band, but this time, it’s on the beach in front of the Tides.