All contracts at Servisair EDI are temp/part time to start off with, usually plenty of scope for over time and I have never heard of anyone getting paid off at the end of the summer either - most staff are either kept on or move on voluntarily.
Part time means 30hrs/week - however, I do not know what the starting pay scale is -sorry.
What are Servisair, like to work with? I think that depends on whether you are in dispatch or pax services and depends on your own character as well. You will be worked hard - It is a very busy station.