Not that this will help you much but I recently delivered at Queen Elizabeth. Princess Margaret would have been our local hospital but my obstetrician (I went private for the ante-natal care) was concerned at the lack of English at PMH (& he is a local).
I have posted about my recent experience at QEH ("Public Hospital (Queen Elizabeth) Queries") & I have been told it is quite similar to PMH. The cost will be next to nothing - we were there for less than a day & it cost $150.
I would suggest actually emailing the hospital to get the information you require. I have found they reply back very quickly with a personal response (not an automated one!).