@Richman To scout the place for slackers without rising suspicion "Hey, let's slack, nobody will notice, besides that janitor, but what is he going to do about it?" and bam, fired for slacking. It's the perfect plan
@Tamerlane I see it in manga and anime pretty regularly.
Pizza La is the chain I always see.
@Richman I think it was an undercover boss type thing. Maybe he observes the candidates from a candid perspective, to see how they act when they don't think they are being watched by a higher up.
I've never heard of an interview venue though, as if different companies all rent a place to interview people...unless it's like a job fair