Thanks to you guys for your replies.
Sorry if I seemed a little stupid- don't get across exactly what I am trying to say sometimes.
With the fact pilots would be more "out of hours" than us I understand it is just on our egypt flights they often get off which is where we end up being into discretion but they get a nice trip- using legal and illegal days was probably the wrong terminology.
All your answers have helped me out in understanding things (companies can be vague when they need a crew member to operate a flight about all the legalities)
Hope you all have a good week