Daddy Jack’s, the downtown fresh lobster specialist, has discovered that the customer isn’t always right.Two months ago, it plastered its glass doors with a cautionary note informing prospective diners that its wait staff will carefully scrutinize the fine print on Internet coupons.On Friday, district manager Clay Sexauer said such issues have plummeted since customers were forewarned.Sexauer figured that of 1,400 or so customers who responded to Groupon offers, providing deals such as $40 worth of food for $20, about 15 percent tried to use more than one coupon per table, which is specifically forbidden. Others tried to use the coupon on Daddy Jack’s $14.95 “Lobster Madness” dinner — also clearly verboten in the fine print.“Basically there’s a reason why we have fine print on the coupon,” said the 31-year-old restaurateur, who has been with the chain for more than a decade. “When customers come in and try to take advantage of the fine print, they get pretty upset. It’s better that we let them know as they come in.”Sexauer figures that about a fifth of those trying to misuse their discount did so innocently, while most were trying to game the system. “I wouldn’t call them problematic; it’s a — a misunderstanding.” He said the percentages all around were roughly the same with coupons from LivingSocial and the Star-Telegram’s DealSaver, although Daddy Jack’s manager Jessica Knot, 27, said the Groupon coupon clutchers seemed to ignore the fine print, willfully or not, the most.Daddy Jack’s Southlake store uses the Internet offers while its Dallas Greenville location does not, he said.Despite the problem, Sexauer said, they are an effective promotional strategy.“It doesn’t cost you any money until you get the people into the door,” he explained. “And that’s our opportunity to show people we have great food and great service.”That said, the couponers are notoriously poor tippers. Sexauer said all too often they don’t figure the gratuity on the pre-discount ticket, say, $80 for a table of four, but rather on the $40 net cost, hurting the wait staff’s earnings. He recommended an 18 to 20 percent tip on the check’s amount before discount.Walmart hiring fornew store in HasletWalmart has opened a Saginaw hiring center at 1401 N. Saginaw Blvd. to take applications for 300 jobs at a new supercenter that will open in Haslet this fall.The company said the center is open from 8 a.m. to 5 p.m., Monday through Friday, and 8 a.m. to 1 p.m. on Saturdays. Interested candidates can also apply online at http://careers.walmart.com.Walmart also has a special program for hiring military veterans who were honorably discharged in the past 12 months. Through its Veterans Welcome Home Commitment, the retailers will offer a job to any such qualified veteran. More information is available at http://walmartcareerswithamission.com.Most new employees will begin work in August to prepare the store for its grand opening. The supercenter is being built along U.S. 287 just west of town.Huddle House dinersplanned for Fort WorthHuddle House, the Atlanta-based chain of home-cooking diners, is once again targeting the Fort Worth area for growth.The company recently announced plans to open 135 restaurants in the Southeast and Texas over the next five years, including six in Fort Worth, and is looking for franchise partners.It’s not the first time the chain has announced plans for the Fort Worth market. In 2007, Huddle House said it planned eight restaurants for Fort Worth. But soon the financial markets and the economy collapsed, and the expansion never took place.Huddle House currently has 11 restaurants in Texas, including in Cleburne and Joshua. Nationwide, it has 400 restaurants in 21 states. The diners are typically open 24 hours and serve up a variety of southern comfort foods including chicken fried steak with green beans and a sausage and gravy scramble.