i worked night shifts, so was a calm environment but more work load at night. Learned how to manage time and resources to enable a swift combination between teams.
Hardest part of the job would probably be finding new technologies on site and have to do a quick research in other to help engineers. Wouldn't call say its hard since its quite fun learning new things.
Enjoyable part will be getting all the work done. The self joy from that makes me sleep well at night.