While I only worked at Apple for about 8 months (started as a summer intern), I can completely echo this. It's never that we _have_ to stay later, it's that we _want_ to. You really have a dedication to the product because you want your customers to love you; that was the overall mindset. With a deadline, that means you'll do almost anything to meet it and succeed.
As for the secrecy, you're totally right. I roomed with 3 other interns during the summer and none of us would talk shop, ever. When interviewing for other companies later, nearly all my answers about what I did at Apple were "I wish I could talk to you about that, but the most I can do at this point is talk 'around' it, if you will, since that's an unreleased product." Not at all unlike government secrecy.
All that said, it really was a glorious place to work. I miss a lot about it; the seemingly infectious excitement and passion for the products was really driving. I loved being in that environment. :)
As for the secrecy, you're totally right. I roomed with 3 other interns during the summer and none of us would talk shop, ever. When interviewing for other companies later, nearly all my answers about what I did at Apple were "I wish I could talk to you about that, but the most I can do at this point is talk 'around' it, if you will, since that's an unreleased product." Not at all unlike government secrecy.
All that said, it really was a glorious place to work. I miss a lot about it; the seemingly infectious excitement and passion for the products was really driving. I loved being in that environment. :)