Pros
Just like everything, you get out of it what you put into it. I gave this program my full attention and absolutely loved the experience. From the symposiums to the summer school teaching, every part of the program is intentionally set in place to help a fellow succeed after they "graduate" from ITF. The coaches stay with you after the summer. My coach, Doc Miller, has been an amazing coach, mentor, and great person. I go to Doc for letters of recommendation and for advice when I need it. Doc always takes the time to speak with me and to provide as much assistance as I need. If I could redo my past two years, I would not do anything differently. I felt completely prepared for my actual teaching position.
Cons
The cons are the same as any other job. You have to get up early, arrive on time, be mentally present, etc. The bad reviews I see on Glassdoor seem to be from people who just recently graduated from undergrad and were also realizing what it is like to work in the real world. I feel that the negative reviews stem from people realizing what real life is rather than what ITF did or did not do.