yup that's enough, all i had was my birth certificate and cv and they never even asked for my cv
the interview itself isn't hard, they asked me stuff like why retail, why primark, what skills do i have that make me suited to the job etc
then a bunch of what would you do scenarios which were quite straight forward
there's no need to revise anything tbh, i did some research on the company before mine which was useless but i forced it into the conversation bc i didn't want to feel like i'd done it for nothing
maybe practise answering questions out loud if you're shy? the job does involve lots of talking to people so they would want someone who seems fairly comfortable with that, but obv they will understand that you'll be nervous at an interview
good luck
you probs will get the job