A fine of up to 10,000 euros: Some costumes are prohibited at carnival. If there is a hindrance or danger, this may also constitute a violation of the general duty of care and result in a fine between 20 and 35 euros.
If the view is obstructed, a fine of 10 euros is possible. It's clear opulent disguises with a full-body dinosaur or a monkey attached to a head are out of the question on the steering wheel. If you dress up as a guard from the Netflix show “Squid Game” this falls under the ban on masking.