ChatGPT, as a life-changing technology, has become the topic of discussion in academia and industry. Built on top of a large language model (LLM), ChatGPT can significantly impact different fields,therefore, understanding these impacts on various sectors, like tourism, is crucial. This viewpoint aims to critically discuss opportunities, challenges, and impacts of adopting large language model applications in the tourism industry. Few studies have been conducted about this novel topic in tourism. Furthermore, businesses are starting to explore large language model applications. LLMs are expected to be integrated with voice assistants and robots. Since previous studies have not discussed significant LLM-driven voice assistants and specifically robots, this viewpoint, while reviewing existing studies, focuses on the highlighted gaps to provide a new perspective.