You may be able to redeem your Online Pass prior to that, starting tonight, but the servers will be inaccessible. If you redeem your Online Pass prior to that, you should still be completely fine to connect tomorrow morning at 9am.
Vita Online Pass publishing was delayed, but it should now be active!
Store items will be active and purchasable today, with the rest of the weekly PS Store content.
Thanks for your cooperation and support,
- The Show team