Forum Moderators: martinibuster
You mention having tourist information on the site, but are most users coming for the information or the images? If they're coming for the images, you need to build up the tourist-information pages to attract more bookers, not just lookers.
Example: you have a section on travel in Bermuda. Research makes you think scuba gear may be a relevant, better paying field for that same demographic. Build a landing page discussing how/when to save rental fees by buying your own scuba gear. Replace the AdSense ads on those Bermuda pages with a teaser pointing to this landing page.
Of course, since you can place more than one in-house ad on a page, you can slice that Bermuda traffic multiple ways, and be testing more than one new landing page at a time.
In your current situation, AdSense is basically telling you "your traffic is not well-qualified to buy expensive products/services". That's probably not true. It's probably true that some significant portion of your traffic is qualified to buy expensive products/services that AdSense is not currently targetting. You can separate those people out and add content that forces AdSense to show them the appropriate ads.
AdWords advertisers try to do some of this "casting a wider net", but they can rarely cast as wide a net as a publisher can using in-house ads. For example, it's entirely possible that an AdWords advertiser selling scuba gear might bid on the word "Bermuda". However, it's very unlikely that someone selling home security services will bid on the word "Bermuda". But you can easily make and test an in-house ad like "Tips for securing your home while you're vacationing in Bermuda" and point to a landing page that home security AdWords advertisers will love. It would be too big a cost/hassle for the security vendor to go after words as far afield as "Bermuda". It would be not much cost/hassle for you to effectively do this for them.
I'd recommend making sure there's lots of informational text on the site, in order to attract people who are researching destinations, as opposed to simply looking at pictures.
Thanks