Hi Natalie, we work with hundreds of travel suppliers, which will allow you to focus on whatever type of travel you'd like! If you want to know whether we already have a relationship with a specific supplier, please reach out to us.
In most states, you are able to charge service fees and there are a lot of aspects to consider when setting up a fee structure. Host Agency Reviews actually has a great resource on this which you can find here: https://hostagencyreviews.com/blog/travel-agents-guide-to-charging-fees. We also have lessons on fees in our online Virtual EDU series and in past webinars to help you understand what all you need to know about charging service fees.
Feel free to reach out to us 1-888-611-1220 or at memberships@khmtravel.com if you have additional questions.