I am looking for some arrangement with one or more agencies to help sell/promote retreat programs regionally.
What I'd like to know, if possible:
How deals between travel/tour agencies and the service providers normally work? Is there a more or less common structure?
Best ways to find and approach agencies (prior to pounding the pavement

Names of reputable, reliable travel/tour agencies in Singapore or Thialand, who might list and book retreat packages?
Anything else I haven't thought of?
Thanks!