The following images show you the structure of the Landing Page (https://ddw.gttwl2.com/destination-weddings):
After the main content everything is about related content. Related Landing Pages, Related Testimonial, Related Destinations, Related Products, Related Blog Posts. Everything related to the last-tag Landing Page.
The easiest way to check what are the specific tag for each Category of Business is:
Website Admin: Under Landing Pages Section
Example, if you want to add content to the Honeymoons Landing Page just need to add the tag "honeymoon" to your blog, product, place, landing or testimonial post. Do you want to show same post inside another Category of Business Landing Page? no problem, add the other tag/s, doesn't matter the position.