This is my  the first time I to write in the/my notebook.

or

This is the first time that I write a notebook entry.

or

This is my first time in writing a notebook entry.

Last night I drank a lot of wine, my colleague left our company for dinner, after dinner, go he/we went [past tense] to KTV. My friend got drunk, and we carried him home.

This is not a happy night [if the action -the night-  is over, then you should use the past tense] This was not a happy night.

你的朋友被你们带回家去了。你们真是好的朋友。他应该喝了酒太极了。