I don't want customers to bring other people's things to the store to eat. How to write a hint?

Consumers have the right to decide whether to buy drinks from catering enterprises. Operators use statements, store notices and other forms to prohibit consumers from bringing their own drinks, and can only buy drinks several times higher than the market price in the store, which violates consumers' right to choose independently and fair trade.

Article 9 of the Law on the Protection of Consumer Rights and Interests: Consumers have the right to choose their own goods or services. Consumers have the right to choose their own operators to provide goods or services, choose their own varieties of goods or services, and decide whether to buy or not to buy any kind of goods or accept or not to accept any kind of services. Consumers have the right to compare, identify and choose their own goods or services.

Paragraph 2 of Article 26 of the Law on the Protection of Consumers' Rights and Interests stipulates that operators shall not 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 clauses, notices, statements, shop notices, etc. , shall not use format terms and technical means to force transactions. Format terms, notices, statements, shop notices, etc. If it contains the contents listed in the preceding paragraph, its contents are invalid.

Some ethnic friends are not allowed to bring drinks and foreign food into the store because of their beliefs.