I didn't go to ATP so I have no insight, but I do know about the time it took me. I got my CFI/CFII in 28 days. It was a handful but I could have gotten it done a little sooner. I graduated with honors from a very good university so I study. I studied all the time for those CFI/CFIIs. I was never told what I was to be asked on a checkride. I was never given gouge. i went on to be a very sought after instructor and instructed for 1.5 years. i got my multi by networking and being a good natured, punctual, mature person. If you are interested in shopping at Hollister, texting your boyfriend in class, coming to the cockpit drenched in Axe, and wear your hair so that it leaves cornrows on the headliner, then a 2-week CFI program probably isn't for you. In fact, I implore you to take your time because you'll need it.

Sometimes, faster ain't always better. And that's true for running as fast as possible to the regionals to fly an ERJ.