Honestly not as scary as i thought.
The interviewers were friendly and put you at ease, so it didn't feel too much like an assessment
The Customer Roleplay was like an easy OSCE - not as hard as the ones we get at uni.
The group activity was also super chill, no presentations or anything to do, just a discussion amongst yourselves. I was also expecting the candidates to be very competitive and want to out shout each other (dicks 😝) but it wasn't like that at all, we actually managed a friendly discus with no pressure.
The interview itself was the hardest part - it wasn't too bad for me because i had prepared beforehand (by thinking what they might ask and getting tips of friends and family as to how best to answer them)
If you don't prepare you will find the interview portion hard if you do it will be a breeze.
Just remember that whatever questions they give you, try to give a personal experience that backs up your answer - thats what I did anyway, and don't be afraid to ask them to repeat a question or to take minute to think up a good example.