Deliberate mistake: Laser beams are normally not visible, except for a small dot where they hit a surface. Even if made visible, using smoke or dust or special glasses, they are thin as threads. Obviously something more visual was needed for Toulour's dance act, hence the thick beams of light.
Continuity mistake: When Tess is told to put a pillow in her dress to make herself look pregnant, they hand her a square pillow. When she takes the pillow out later while a guest of the local jail, the pillow is round.
Upvote valid corrections to help move entries into the corrections section.
Suggested correction: The square pillow was in the limo; the circle pillow could easily come from the hotel.
Suggested correction: Talour would need to see the beams in order to get through. I would attest that he let off a low grade smoke canister with a fine mist like a concert hazer to make the beams visible yet not trip a smoke fire detector.