There is not accurate answer for this question but ultimately creating most suitable condition and favorable atmosphere for matching with the interest of interns with respective tourism organization's purpose, people, process(technology, innovation, system) value talents and policy all can support skills and competencies required successful internship.

Language skills and cultural sensitivity,customer service, communication, teams teamspirit and leadership and responsibility.

Habilidades directivas con competencias en el desarrollo de liderazgo, organización, manejo y orientación del mercado turistico.

Habilidades tecnológicas siendo competentes en el manejo de paqueterías apropiadas al sector turístico para el manejo de productos y servicios, orientación del cliente, manejo de información turística local, nacional e internacional,

In the service industry, soft skills are of the needed areas to be explored, and putting premium on improving these soft skills are needed in the industry. As the Tourism businesses resume its operations, the need for caring, accommodating and sensitive staff becomes a prime concern in restarting tourism operations in enterprises affected by the crisis.

Note that hard skills (technical, operational and administrative) can be learned, unlearned and relearned; but soft skills (compassion, sensitivity, awareness, initiative) cannot.

https://www.topuniversities.com/student-info/careers-advice/5-essential-soft-skills-careers-hospitality-tourism