Regarding the T & Cs. Logically, they will be at best SQ mainline local terms. I say at best, because the benchmark in Singapore nowadays is the substandard, bare-bones, scrape-the-bottom-of-the-barrel deal offered by Tiger.
Also, for any employment in Singapore, a dictionary is useful:
'at company's discretion' = you won't get it
'reviewed on annual basis' = less than last year
'generous' = crap
'subsidised' = crap
'discounted' = crap