OK here is the low down. I emailed Fox Studios today and this is what I got in reply:
**************
Dear Kozo,
Thank you for your email regarding the premiere of Brittany Spears' new film Crossroads. The premiere will take place at Hoyts on Thursday 18th April. She will perform a few new songs on the showring (the oval opposite Hoyts) at 3pm, and her premiere will commence at 7pm. Anyone is free to come and watch the performance along with the stars walking up the red carpet afterwards. Entry into Fox Studios is free of charge.
I hope this answers your questions, and if you would like further information please do not hesitate to contact us.
Kind Regards
Justina Hemperek
**************
It's good to know that these people even know how to spell her name

The note about her performance coincides with the previous post.
I'm flying out of BrisVegas and will be there hopefully before lunch.
Are any of you guys from the forum attending. It would be good to be in a group so that if anyone wanted to get drinks/food/refreshments or go to the loo during the vigil, we can all mind their spot.
Also is it school holidays in NSW next week? Wanted to know how much of a crowd there is going to be.