It depends on what you want to be. If you just want to be a lecturer, then you are free during break. |
If you want to be faculty, which requires review every year based on your paper/research/graduate students/lecture, you can hardly have breaks.
Professor is not teacher, and teaching is really really small part of professor's life.
You can check this post on zhihu.com. https://www.zhihu.com/question/28551234. visit 1point3acres.com for more.
In my opinion, if you don't like research, this road is really hard for you.