Legal analysis: illegal. It is unreasonable and unfair for merchants to set the minimum consumption standard for private rooms in any way, which damages consumers' free choice and limits consumers' fair trading rights. The minimum consumption standard of private rooms is compulsory catering expenses, which is an act of forcing consumers to accept the price stipulated by them, which damages the legitimate rights and interests of consumers and should be regarded as illegal.

Legal basis: Article 24 of the Law of People's Republic of China (PRC) on the Protection of Consumer Rights and Interests. If the goods or services provided by the business operators do not meet the quality requirements, consumers may return them in accordance with the provisions of the state and the agreement of the parties, or require the business operators to fulfill the obligations of replacement and repair. If there is no state regulation and agreement between the parties, consumers can return the goods within seven days from the date of receipt; After seven days, consumers who meet the statutory conditions for terminating the contract can return the goods in time. If it does not meet the statutory conditions for terminating the contract, it may require the operator to fulfill the obligations of replacement and repair. Where goods are returned, replaced or repaired in accordance with the provisions of the preceding paragraph, the business operator shall bear the necessary expenses such as transportation.