Legal analysis: "Prohibition of bringing your own drinks" is an unfair and unreasonable provision made by catering operators by taking advantage of their dominant position, which aggravates consumers' responsibilities and belongs to the "overlord clause". Therefore, it is illegal for hotels to bring their own drinks or collect corkage fees.

legal basis: article 26 of the law of the people's Republic of China on the protection of consumers' rights and interests, where a business operator uses standard clauses in business activities, it shall draw consumers' attention to the quantity and quality, price or expenses, time limit and method of performance, safety precautions, risk warning, after-sales service, civil liability and other matters of great interest to consumers in a conspicuous way, and explain them according to consumers' requirements. Operators are not allowed to make unfair and unreasonable provisions to consumers, such as excluding or restricting consumers' rights, reducing or exempting operators' responsibilities, and aggravating consumers' responsibilities, by means of standard terms, notices, statements, shop notices, etc., and are not allowed to use standard terms and use technical means to force transactions. Format clauses, notices, statements, shop notices, etc. contain the contents listed in the preceding paragraph, and their contents are invalid.