Is doing the Diagnostic hard (CSP)? + a couple questions I hope to get answered

I have been ski patrol before so I am doing the recertification for BLS in a couple days as well as the PA and Diagnostic. Anyways I hope you can answer these questions because I am very nervous.

Will it work the same way it did when I was a new recruit? I have a lot of questions I hope you guys can answer For example do I just have to say the treatment but not actually do it?

Also why does it say patient assessment + diagnostic?Do they not evaluate the patient assessment as I do the scenario?

and its a one hour time slot? Will it really take that long?

Also are the scenarios completely random or do people near the end of the time slots get harder scenarios?

Do you just relax while you wait until the afternoon for BLS? because my timeslot is near the middle but im not sure if I will be doing stuff until lunch

is the BLS a straight up evaluation? because I dont know if I remember everything.