Vegas is full of some of the best restaurants in the country. Jack won't go to any of those. I expect over the next month that we'll get some JotG videos of one or two buffets and one or two mediocre casino restaurants that have a licensing deal with a celebrity chef.
Im expecting videos on one buffet and two Gordon Ramsay restaurants. If I had to guess, he'll go to his fish and chips restaurant and the Hell's Kitchen place, but maybe he can talk Tammy into blowing some serious coin at Steak. In terms of buffet, I bet he either chooses the crappy one in his hotel or he'll go to the complete opposite end and do the extremely overpriced Bacchanal at Caesar's.
Maybe he goes to Lotus of Siam since it's the first off the strip joint that a boomer would discover with a Google search. It's also Thai, so he could eat all of Tammy's food since it's generally spicy. He would definitely order the slop they put on the menu for uncultured gringos like Jack instead of the good stuff, though.
I'm probably wrong on the exact joints, but I can essentially guarantee that he won't go to any places that were worth a special trip.