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No, as of my last update in April  2023, Taiwanese citizens do not require a visa for visits to Dubai for tourism purposes for stays of up to 90 days.

If Taiwanese citizens plan to stay in Dubai for longer than 90 days or for specific purposes such as work or study, they will typically need to apply for the appropriate visa type, such as an employment or student visa.

Dubai offers various types of visas, including tourist visas, transit visas, business visas, and more, depending on the purpose of the visit. Taiwanese citizens should select the appropriate visa type for their travel purpose.

Typically, for longer stays, Taiwanese citizens would need to apply for the appropriate visa extension or a different type of visa, depending on the purpose of the stay. It's essential to check with UAE immigration authorities for extension options.

No, a tourist visa is not appropriate for employment in Dubai. Taiwanese citizens interested in working in Dubai should obtain the appropriate employment visa, typically sponsored by their employer.

As of my last update, Taiwanese citizens typically did not receive visas on arrival in Dubai for tourism purposes. It's advisable to pre-arrange any necessary visas before traveling.

Taiwanese citizens can apply for a Dubai visa through the Dubai Visa Center if needed.

Typically, a Dubai visa allows entry to Dubai specifically. If Taiwanese citizens plan to visit other emirates in the UAE, they may need to check whether additional permits or visas are required for those emirates.