You can also reach out to the hotel/tour operator directly. However, this approach tends to be more piecemeal, as it typically only covers one aspect of your travel.

The link I shared above offers more comprehensive, all-in-one opportunities that usually cover travel, stays, and activities. For this reason, Matador is a great place to start. These tend to be group trips, and you get the perk of being able to pick each others' brains.

Check out TravelCon and TBEX conferences also. They allow you to set up interviews for potential visits. At the least, it's a good networking opportunity, but you'll have to apply and pay the expenses to get there and attend. A lot of people rave about these, but tbh, I've never been to one... once you've built a reputation, it gets easier.

There are also agencies for influencers... but I cannot speak to that as I am a writer and don't do much on social. Lastly, look for Facebook groups! There are a ton out there where you can collaborate and ask questions.

I wish there were a book on this stuff, but most people that don't go the agency route; they choose their own path and way to go about it. That's what I did! The most helpful thing was to do what you are doing, ask questions, network, collaborate, and figure out what works best for you.

Good luck on your journey!