For CX or KA?
Unless you don't intend to let them know and do some aero work before hand, I don't think it will be much of a difference.
They are trying to access your skills in handling something you are not use to...do you want to lie to yourself by going out and practice everything at least once?
I recommend you just go and give it your best shot.. there are somethings in life that is better not to be prepared, and just go with the flow.