Lots of people would like to know this, so here’s what I’ve learned myself on the subject.
If you collaborate with businesses and exchange services, lots of companies will give you complimentary passes/tickets/overnight stays in exchange for press.
Or at the very least, discounted rates.
For example,www.eurail.com and www.iamsterdam.com describe on their website how they provide press support to travel bloggers and journalists. If you google “travel bloggers” and “all opinions are my own” you will find more companies who have worked with travel bloggers before.
You have to present yourself from a unique selling point in your proposal, which basically is saying how your business can help the other business.
Then, you look up the companies website, and find the PR or Marketing contact.
Write an email that goes something like this:
Dear Mr./Ms. XY,