If an employer's house policy conflicts with a server's personal preference, what should the server follow?

A server is obligated to follow the law and their employer's house policies, even if those differ from the server's personal preferences. House policies (such as carding everyone or limiting drink counts) are designed to keep service lawful and reduce risk, and the server acts under the establishment's license. Ignoring house policy can expose both the server and the business to liability and disciplinary action. When the law and a stricter house policy both apply, the server follows the stricter standard. Compliance protects everyone involved.