Firstly, I think that 'Dj's work' (lepiej napisac...the work of a DJ) is very interesting and fascinating.
'They can marvel many night life attraction' (CO? napisz to zdanie po polsku - nie rozumiem)
However, THE work of 'dj' (dlaczego malymi?) 'have' (WORK to jest 'it' -3os.l.poj - dlaczego uzywasz 'have'?) also disadvantages. (ale wczesniej nie pisales, ze ma jakies advantages, nie mozesz uzywac slowa 'also', jak nie mamy to z czym polaczzyc).
They sometimes have to 'working' WORK long hours. Furthermore their work
happenS 'main' (nie, slowo jest MAINLY, 'main' to glownY, a tutaj chciales napisac glownIE) at 'the' (niepotr) night, so they are often 'exhausting' (tutaj potrzeba czasownika simple past).
Finally, their work is very dangerous, because they are 'connect' CONNECTED with nightlife. (i co do tego?- w jaki sposob to jest 'dangerous' - mam sie domyslac?)
Moreover lights CAN (bo nie jestes pewny) cause discomfort to the eyes. On the one hand dj's work can bring a lot of 'funny' (funny ale co? czego? - mysle, ze nawet nie chciales tego przekazac, slowo jest FUN) and satisfaction, (przecinek przed BUT) but on the other hand it can be very tiring.
To 'sup' ('sup up' - znaczy 'wypij to szybko' - mysle, ze to tylko literowka)up, 'see' (a gdzie ma sie patrzec, co mam ogladac?, cos zapomniales), that dj's work brings many benefit and also disadvantages. In my opinion, dj's work is very difficult and demands 'a' (niepotr) suitable experience. I think that it isn't 'A' job for everyone.