The short answer is "never," as far as we can tell. Here's the back story.
It was early December last year (Dec. 2, to be precise), that the newswires were suddenly abuzz with talk of a Beach Boys-themed restaurant, named Good Vibration, that was slated to debut at Bally's this summer, to coincide roughly with the '60s supergroup's 50th anniversary. Had plans gone ahead for this restaurant, which apparently was to be themed around "cars, surf, and women," and the general Cali-beach lifestyle, those pastel-sweatered dinosaurs would've been joining the ranks of Lynryd Skynryd, KISS, Jimmy Buffett, Toby Keith, Sammy Hagar, and Vince Neil, to name a few, as "rock stars with bars" (or restaurants, or other attractions) in Sin City. Good Vibration was going to feature a "diverse menu and bar, with affordable prices", and the Las Vegas debut was intended to be just the beginning of a global brand presence.
However, no sooner had the rumor hit the mill, than came word that the whole thing had been called off. The cancelation reports were as vague as had been those first touting the venue's imminence, merely stating that a "Caesars insider" said that it wasn't happening, without any further explanation.
Unlike the much-hyped and short-lived Beach Boys-inspired Surf: The Musical, which opened late and closed precipitously at Planet Hollywood earlier this month, after only a six-week run, this Beach Boys spinoff was at least allegedly sanctioned by the legendary band, but the affiliation was not enough to save it, evidently. We tried, but failed, to make contact with the Monsoon Group, the Vegas nightlife consulting company behind the project, so that's as much as we can tell you about this non-starter.