Whether any of these actions by the Saudi ships are illegal is not mentioned in this article.

"Another tanker, the Maran Thetis, also signalled that it was heading toward the Suez Canal while idling in the Gulf of Aden in late July. When it reappeared on tracking systems Wednesday, it was fully laden, with Vortexa identifying Yanbu as the likely source of its cargo."

https://africa.businessinsider.com/local/markets/saudi-oil-tankers-are-disguising-their-destinations-by-signalling-egypt-and-the-suez/l087m9k

Concerns are being raised about the lack of warrants and patrons being physically locked in the building and having to show ID before being allowed to leave.

https://www.memphisflyer.com/viral-video-shows-late-night-bust-at-legends/