I looked into boot camps in Tokyo a few years back, and Le Wagon was the one that stood out for me. Mainly because at that point I’d been experimenting with Ruby and JS for a few months and knew I wanted to focus on Ruby/Rails. I ended up going to General Assembly back in my own country, and was fortunate to land a job quite quickly after completing the 3 month course.
My take away from my experience, and talking to other graduates, is that you will only get out what you put in. So it pays to focus on learning outside the classroom and using your teachers as your own personal tutors/stack overflow. It’ll pay off a lot more than just doing the course work provided.
To do this, you should think about the kind of company you want to work at. Once you have a pretty good picture of your ideal company, start focussing on the skills that would be useful there. i.e. My ideal is a product company/start-up that uses Rails/Ruby, writes tests, and cares about clean, maintainable code. JS(React) in the front end is nice too. Currently I’m not so interested in DevOps or designing UI, so I only learn enough to get by.
Having a solid image of what you want to be helps you understand what is important to focus on during the bootcamp, and how to sell yourself when you come out at the other end.