Currently in the ATP-CTP course at L3 in Dallas.

We have lots of down time. Day 1 and 2 in the classroom were about 8-4, Day 3 I was back in the hotel early, and Day 4 should be similar to Day 3. It's somewhat tiring just sitting in the classroom doing nothing, but we have lots of breaks, and you're not exactly exerting yourself, mentally or physically. You should have plenty of capacity to study in the evenings.

The last three days are sim days, and you will usually have one sim session per day (roughly 4 hours). I think it's pretty typical for those sessions to be really late (my full-motion sim times are 22:30-02:30 and 22:15-01:15). That means that between the afternoon of Day 4 and 22:30 on Day 5 (roughly 30 hours), I have nothing to do. Days 6 and 7 will see you busy for no more than 4 hours each, or if you do get doubled up on one day, it will mean you have a whole day empty.

There is plenty of time to study.

When I got to class, I already had Sheppard Air, and, following their study strategy, had gone through the questions once, and was about halfway done going through them a second time. It's Day 3 now, and I'm still 5 days away from taking the written; I'm basically twiddling my thumbs with the written prep at this point. I've finished up the questions a second time, reviewed the ones that I missed during that round, and have taken a few practice tests, all in the 90s.

At this point I plan to take 1-2 tests a day just to keep myself seeing the questions, but I'm going to have a lot of just sitting around time.