What does "Man let such night fest oder man will

What does “Man let such night fest oder man will such vorher keen gedanken daruber machen.” mean?

Hi C
sich festlegen: to commit oneself
sich Gedanken machen: verbatim: to make oneself thoughts → to contemplate or to bother oneself about sth. or to give thought to sth.

----> One does not want to commit oneself beforehand or one does not want to bother oneself about it beforehand.

Quite an advanced text you are reading there…!
Meow

PS: a really good dictionary which gives translations for different contexts is: http://www.dict.cc
I am using it a lot for my Spanish lessons because translations of the built in dictionary of many lingq lessons is rather useless and imprecise! Try it out with the above expressions