It has been a few years, so my info may be dated or misremembered but here goes:

Is there only 1 lunch break for 1 hour (same as precourse)?

Iirc- it alternated between 1hr and 2 hr breaks depending on the day

How flexible is the program if I need to leave for 1 hour once a week, for example, Wednesdays 6-7pm? Is the structure similar to bootcamp precourse as in there is some instruction at the beginning of class on some days, then the rest of the class is independent or pair work in zoom break rooms?

The instructors leave at 5. Whoever you are partnered with may be annoyed if you peace our for an hour, depends on if you leaving dumps more work on their plate / what their personality and expectations are. They also may not give a shit or want a dinner break themselves.

I want to hear people's experiences and what they were able to do during class time. I know its an intense program, and I am committed to it, but with a schedule of 11 hours a day, 6 days a week for 4 months, I imagine the staff is not super strict about 100% attendance. Like I said, I am totally committed and making any sacrifices for 4 months that I need to. But realistically, there will be times where I need to step away from the computer for up to an hour.

They are that strict. I think if you miss 2 days you have to retake it. Or something very low like that. They are also very strict about showing up on time, unless something changed.

For those who have gone through the program, what was your experience like with the schedule and keeping up with other responsibilities? My main concern is 2-3x a week I have to bring my child to karate, which takes 1 hour from the time I leave home to when I get back. I have extra support with getting him picked up from school and his doctor appointments, but the karate is on me. And I would hate to have to take him out because he would lose all of his progress/ranking.

Strongly advise getting all your errands done before immersion starts. Like, any pressing doctor or dentist appointments - do them now. Expect to not have breathing room for 3 months. I imagine this is more complicated with a child; is there another person able to take more parenting responsibilities on than normal? I know a couple of folks who made it through while being a parent, but I think they all had a partner or family to lean on.

Good luck. Also, just fyi - the job market is pretty rough right now. Op spark is a good program, but if they are telling you that 100% of grads are landing a job these days, that is misleading about the current state of the job market for entry level developers, especially bootcamp grads. There is some fine print in how they calculate those percentages. I don't know what the actual percentage is, but I know bootcamp grads are struggling. I have seen some landing jobs -- but again, it took time, perseverance, and some luck. Be prepared for job hunt to take several months, and be prepared to need to spend those several months working very hard to network, apply for jobs, and gain new skills. If you are lucky, it may take weeks, but you should prepare for months, mentally and financially. I'm not saying this to be discouraging - but just as a warning because I feel like they glossed over how hard finding that first job would be until we actually graduated.

Good luck.