galleygirl - it wont happen.. no matter what they tell you. the PT list is years long and is not looking great for the future anyway. i suggest MAM casual if you need less hours
bla_bla - go the full suit. they wont think any less of you, trust me and if you dress 'down' then have someone interviewing you who thinks its more respectful to wear a suit you will lose points. JQ is not like virgin in the way that they like a more casual approach, most of the management and crew alike prefer a more professional grooming level that you would adhere to if interviewing for a mainline QF job.