Guests directly account for over 50% of resource use in hotels and as much as +90% in self-catering accommodation. They are quite simply the most significant factor contributing to hospitality's ongoing carbon emissions. Given the targets to reduce carbon emissions by 66% by the year 2030, it is imperative that practical solutions for the accommodation sector are created and applied fast. This book is the first text to demonstrate how to actively persuade guests to participate in achieving sustainable hospitality.