This happened in Brittany, France. Not only did they get stuck when the tide came in, they also got fined for breaching the curfew.
Story (in French): https://www.ouest-france.fr/bretagn...ne-plage-et-repartent-avec-une-amende-7101544
Story (in French): https://www.ouest-france.fr/bretagn...ne-plage-et-repartent-avec-une-amende-7101544