You only get one chance at a 30th anniversary — much to the dismay of Dallas fans who last weekend paid as much as $1,000 to be essentially shut out of their favorite nighttime soap opera's cast reunion. Reports today cite a surge of gatecrashers at the show's famous Southfork Ranch last Saturday, when a barbecue and meet-and-greet with Larry Hagman, Patrick Duffy, Linda Gray and others deteriorated into a near-riot of confused, angry ticketholders and sobbing protests that Falcon Crest would never do its fans like this.The anguish persists into this week, with many attendees outraged at promoters who failed to honor their tiered ducats — $100 for the basic, "Corn on the Cob with Charlene Tilton" package, we hear, all the way up to the $1,000, "Who Shot J.R.?" VIP access featuring all-you-can-eat burgers and three attempts at the Larry Hagman dunk tank. In their defense, organizers argued that ranch officials allowed in 2,000 walk-ups in addition to the 2,000 ticketed guests, all of whom fought for vaguely enforced access once inside the ranch. But whomever is to blame, heartbroken fans who waited three decades for the chance to pray at the altar of Jock Ewing (God rest his soul) want answers now: