This is the 17191st most frequent Russian word.
сторонники
Supporters.
This usage of 'сторонники' indicates those who prefer and support a specific lifestyle or mode of relaxation, in this case, peaceful ones.
Сторонники спокойного отдыха выбрали загородный дом.
Adherents of peaceful relaxation chose a countryside house.
In this sentence, 'сторонники' refers to people who align themselves with and support the concept or cause of ecotourism.
Сторонники идеи экологического туризма организовали встречу.
Supporters of the idea of ecotourism organized a meeting.
Here, 'сторонники' is used to denote individuals who support and push for changes or reforms, particularly in the education system.