I am not EK, but will try to answer
I am not EK but am involved indirectly, so have, some , slight knowledge for you.
EK are a reasonable employer, not perfect, but then very few are perfect.
In general EK will not be too interested in negotiation, they have enought clout not to go begging at road shows.
I would not think that you will see "umlimited" free tickets, and more than you will see plenty of OFF time.
EK salary is not very impressive. If you are receiving accomodation and other perks then the package is acceptable.
In general CC and admin staff do not work at EK for the gross salary, but the nett benefits, inc the section on the next CV that said 2 years in EK.
Hope this is of some benefit, until an expert arrives with more details foer you.
glf