After being a Project Manager for ~30 years before ever hearing about PMI, I found the boot camp extremely useful for a quick study guide before taking the Certification Exam. It’s important to review the Processes & Process Groups & especially to learn PMBOKese. A common vocabulary is probably the best thing that standardization has brought. Aside from that, most boot camps also provide access to online practice tests, which are a great help in seeing how PMI designs their tests.
