Despite the original voice actor for LaBarbara (Dawnn Lewis) being present for the majority of her lines in this episode, it's not actually her voice saying, "Spa 5, is it good?" after Zoidberg hands her the pamphlet about the sauna planet. This line was instead spoken by another voice actor known for various roles throughout the series, most likely Tress MacNeille, who is unable to match Dawnn's more authentic Jamaican Creole dialect at a higher pitch.
When Leela inserts the canister into the tube to find Central Filing, she puts it in the 'In' tube, when it should have been placed in the 'Out' tube.
LaBarbara's hover car comes to a stop accompanied by the sound of squealing tires despite the fact that the car has no wheels.