No. There are no references to Arby's in 'Pulp Fiction'. The movie is set in a world full of seedy characters, drugs, and crime, and fast - food chains like Arby's don't play any role in that narrative.
Gamblers were greedy people. They always pursued more money and benefits, no matter how they obtained them. They like to gamble and always have the belief that they can win. They think that they can always win more money when they are unlucky.
I'm not sure specifically as there could be various interpretations. It might involve a character named Arby in a spooky or disturbing situation created by Chief. Maybe it has elements of mystery and fear related to their interactions.
The unknown noises are quite scary. Like in the story where there are unexplained bangs and clatters from the kitchen area when no one should be making such a racket.
"The Palm Trap" and "The Vest Village Girl: My Daddy Is All Over the World" were two recommended novels. Both of them had a plot in which the heroine's father was a gambler. These novels belonged to the category of modern romance and aristocratic families. There was a lot of friction and emotional entanglement between the male and female protagonists, and the plot was very interesting. I hope you like these recommendations.