Obviously these people will behave like any other people would: in a possibly desperate and irrational way. Some would do some things they shouldn't and might end up in jail for it, some will not. It's up to each individual to fight in their own way.
Regarding your first point, you should really read about the United Nations World Food Programme which is the organism in charge of paying for all the food in these camps. From their own page[1]: "The World Food Programme (WFP) is struggling to meet the urgent food needs of close to six million displaced people in Syria and in neighbouring countries. Food operations are severely underfunded, meaning that WFP has been forced to reduce the level of assistance it provides to refugees across the region." More[2]: "1.7m Syrian refugees face food crisis as UN funds dry up". I have never been hungry in my life but it mustn't be what I would call being "good enough". I agree they are not dead though, just hungry.
[1] http://www.wfp.org/emergencies/syria [2] http://www.theguardian.com/world/2014/dec/01/syrian-refugees...