You can have one standard drink an hour (100ml wine, 1 nip spirits, i think 50ml fortified wine.....) and still be under. They say about 8hrs but everyones different. I know I am heaps longer. But because you're a learner, you limit is 0000, so maybe a couple but that's about it... If you plan to drive to say cam's patrol I'm sure he'd test you....LOL
Yep the bikes are against the law, unregi, uninsured, no licence etc, but don't boo me, if you ring I doubt your local coppers would turn up while they were still doing it....