Good luck, clowning I'm sure you'll do fine - I know that probably doesn't help.
my only advice is to not over think what they are going to ask you, have confidence inwhat you know because you already know everything and you only submitted a short while ago.
Try and distract yourself from it as much as possible until the time comes - as someone said to me do what you want at this stage if you wanna work fine, if you don't then don't.
You'll do great - and make sure and give us a run down on how it goes
All the best
S