Sustainability in tourism has spent a decade being treated as a cost centre. Thailand’s hospitality sector carries that same gap between intention and outcome, and no single conference is going to close it. PHIST, which stands for Phuket Hotels for Islands Sustaining Tourism, returns to Angsana Laguna Phuket on 7 September 2026 as Southeast Asia’s largest annual sustainable hospitality event. I have watched Thailand’s hotel sector cycle through plenty of trends that faded once the marketing budget moved on. One event will not fix that, but PHIST is where the operators who understand the stakes are comparing notes, and that is where change actually starts.