Its Sal Island and Boavista Cape Verde hotels will follow suit next month, with Tui hopeful of extending the initiative to the US in 2019.
The scheme extends to more than 35 RIU branded hotels across the Canary Islands, Andalusia, Madeira and the Algarve.
Collaboration with supplier Emicela, said Tui, has allowed it introduce more sustainable products, reducing carbon dioxide and harmful waste.
The straws are 100% biodegradable and compostable, meaning they break down in contact with other organic waste to product compost or fertiliser.
