National hard seltzer festival pops the top on first Austin event National hard seltzer festival pops the top on first Austin event Seltzerland brings its hard-seltzer festival to Austin's Onion Creek Club this March. Courtesy of Seltzerland A national boozy beverage fest is bubbling up in Austin. Seltzerland, the first nationwide hard-seltzer festival, pops the top on its first Austin event March 13, with more than 50 flavors of hard seltzer available to sample. Seltzerland, presented by New York City-based festival producer Cannonball Productions, will take place in Austin at Onion Creek Club at 2510 Onion Creek Pkwy. And though festivalgoers won’t actually be able to swing a golf club, they can leisurely stroll the golf course while sipping hard seltzer from the likes of White Claw, Bud Light Seltzer, Bon V!V, Cutwater Spirits, and Vizzy.