The prize campaign is also on neowing (CDJapan) just that neowing announced it and it's not on CDJapan yet (but it's the same thing anyway)
They have 150 prizes!
You might win 1 if you pre-order Rock'n'Roll Circus or/and ARENA TOUR 2009 ~NEXT LEVEL~ A or/and the Limited Boxset (even though they wrote that they apologize in advance since it already sold out lol).
http://www.neowing.co.jp/rcms/jpop/h...ign201004.html
The deadline for the prize campaign is 7th April so you have to pre-order until then if you want to enter the lottery.
If there are additional things on the page someone wants to translate you're welcome!
I wrote just the things I understood from my Japanese. ^^