A customary monetary gift for your sister's 50th birthday celebration would typically depend on your relationship with her and your financial situation. It is common to give a gift that reflects the significance of the milestone, such as a generous monetary gift, a gift card to her favorite store or restaurant, or a thoughtful experience like a spa day or weekend getaway. Ultimately, the most important thing is to give a gift that shows your love and appreciation for your sister on her special day. **

Yes, it is customary to tip hairdressers in many countries. Tipping is a way to show appreciation for the service provided and is typically around 15-20% of the total cost of the service. Tipping can vary depending on the quality of service received and personal preference, but it is generally expected in the hairdressing industry. **

In Greece, it is customary to leave a tip of around 5-10% of the total bill at restaurants. Tipping is not mandatory, but it is appreciated for good service. In some tourist areas, a service charge may already be included in the bill, so it's important to check before leaving an additional tip. Overall, tipping practices in Greece are similar to those in other European countries. **

In many cultures, it is customary for the newlywed couple to spend their wedding night together in a private setting, such as a hotel room or their own home. This night is often seen as a special and intimate time for the couple to celebrate their union and begin their life together as husband and wife. Traditionally, the wedding night is a time for the couple to consummate their marriage, symbolizing the physical and emotional bond they have formed. Couples may also exchange gifts, share a romantic meal, or simply enjoy each other's company on this special night. **

On the wedding night, it is customary for the newlywed couple to spend their first night together as husband and wife. This may involve a romantic dinner, exchanging gifts, and sharing intimate moments. Some couples choose to stay in a special honeymoon suite or hotel room to celebrate this special occasion. It is a time for the couple to bond, reflect on their wedding day, and begin their journey as a married couple. **

Yes, it is customary to tip taxi drivers in many countries. In the United States, it is common to tip taxi drivers around 15-20% of the fare. In other countries, the tipping culture may vary, but it is generally appreciated to tip taxi drivers for their service. Tipping is a way to show appreciation for the driver's assistance and safe transportation. **

Yes, there is customary law. Customary law refers to the traditional practices and customs of a particular community or society that have been recognized and enforced as law. It is often based on long-standing cultural traditions and is passed down orally from generation to generation. Customary law can coexist with statutory law and is recognized in many legal systems around the world. **

A tip is customary for craftsmen when they provide exceptional service or go above and beyond in their work. It is also common to give a tip if the craftsman is self-employed or working independently, as they rely on tips as part of their income. Additionally, if the craftsman is working on a project that requires a lot of time and effort, a tip is a nice way to show appreciation for their hard work. **