Virgin are hiring a lot more Cabin Crew at the moment for every base.
Make sure your applications are in with good availability to commence sooner rather than later.
Also depending on the training if you are dual trained (737 and E-Jet) for your initial training this can be 8 weeks of ground school. All Perth crew are dual trained but for other bases depends on demand.]
All new entrants should expect an initial course of at least 8 weeks. I've not heard of any recent ground schools less than that regardless of base. 737 and e-jet are now covered in initial.
The posts about International (777 crew recruitment) have the right idea. There is no expansion of the 777 fleet announced for the near future. Keep in mind, short haul is where they need you and you'll be expected to stay there.
Current international flying is split between short and long haul fleets and crew. It's possible to do international trips on 737. Virgin is not divided between domestic and international, it's all to do with aircraft types and length
of sectors. Long haul do 15hr sectors predominantly and short haul, sectors
under that. Long haul has only 2 destinations LA and Abu Dhabi, short haul
has Bali and Phuket and NZ base (Pac Blue) has Pacific Islands & Australia.
No-one knows of any planned expansion internationally at this stage, nothings been announced to the press.
As always you should be applying for the job you actually want, there are no guarantees of an internal transfer at a later stage or that recruitment for the
division you really want won't open shortly after you take a job elsewhere. It's
happened before much to the annoyance of the crew who were then placed
where they didn't want to be. Internal transfers are always dependent upon
movement within the company and people have waited for years for transfers
in the past. Keep that firmly in mind.