You will see what a working place could be like. You will see what "wild and crazy" coworkers could mean. You will see the single most amazing work environment there ever was. More fun, more interesting work, more stimulating people, and more money flying around than anyplace you've ever seen. You will never look at a workplace the same way again.
The various arms of a company (marketing, engineering, management, etc.) should work in concert to create a harmonious symphony of profitable business performance. But sometimes the cellist thinks the brass section sucks. Maybe the conductor feels a percussionist isn't up to snuff. Sometimes the whole orchestra erupts into a huge brawl.