Dont stress mate. Really all I was asked when I went in for mine was what I had been geting upto, How my fitness was coming along, what I was planning on doing in the meantime etc etc. And really just general chit chat about the RN and your job. Simple and straight forward, took about all of ten minutes.
i must be due one and to be honest im looking forward to it because lets face it you passed the original one its not gonna be pass/ failure, you will get to ask any question u have thought of in the last 6 month and have a good chat about rn
I got told I will be interviewed every 6 months aswell, Like the other guy said I'm looking forward to it aswell, no pressure this time, the first one wasn't even bad so the next ones should be a cake walk