While it is not mandatory for cashiers to be friendly, it is highly encouraged and beneficial for customer satisfaction. Friendly and courteous cashiers can create a positive shopping experience for customers and contribute to a pleasant atmosphere in the store. Being friendly can also help build customer loyalty and encourage repeat business. Ultimately, a friendly attitude from cashiers can have a positive impact on the overall success of the business. **

Dog school is not mandatory for all dogs, as some may be able to learn basic obedience and commands through training apps or online resources. However, dog school can be beneficial for socialization, advanced training, and addressing specific behavioral issues. It ultimately depends on the individual dog's needs and the owner's goals for their pet. **

Living off your mandatory broadcasting fees can be worth it for some individuals, especially if they are able to provide valuable and engaging content to their audience. However, it may not be sustainable for everyone, as the fees may not always be enough to cover living expenses. It's important to carefully consider the potential income from broadcasting fees and explore other revenue streams, such as advertising, sponsorships, or merchandise sales, to ensure financial stability. Ultimately, the decision to live off broadcasting fees should be based on a realistic assessment of one's financial needs and the potential for generating income from broadcasting. **

Retirement is not mandatory in most countries. It is a personal choice based on individual circumstances, financial readiness, and personal preferences. Some people choose to continue working past the traditional retirement age for various reasons, such as staying active, pursuing a passion, or maintaining social connections. However, some professions or industries may have mandatory retirement ages due to safety concerns or physical demands. **

USK is not mandatory in Germany, but it is highly recommended for video games to be rated by the USK before being released in the country. The USK rating helps inform consumers about the content of the game and ensures that it is appropriate for certain age groups. While it is not legally required to have a USK rating, many retailers and platforms may choose not to sell or distribute games that have not been rated by the USK. **

In the United States, recess is not mandated at the federal level, but many states and school districts have policies in place that require a certain amount of recess time for students. However, the specifics of these policies can vary widely. Some schools may have mandatory recess periods, while others may leave it up to individual teachers or schools to decide how to incorporate breaks into the school day. Ultimately, the decision on whether recess is mandatory depends on the specific policies of the school or district. **

Vaccination requirements vary by country and region. In some places, certain vaccinations may be mandatory for children to attend school or for healthcare workers. However, in many places, vaccination is not mandatory but strongly recommended to protect individuals and communities from preventable diseases. It is important to check local regulations and guidelines regarding vaccination requirements. **

Confirmation is not mandatory in all situations. However, in some cases, confirmation may be required by an organization or individual to verify information or secure a reservation. It is always a good practice to confirm appointments, bookings, or important details to ensure accuracy and avoid any misunderstandings. **