super excited for possable ccu stepdown?

hi,
i have my final interview tommrow with the nursing director on a ccu step down unit. I am really excited because i wanted to start my career in crital care. I am not sure excatly where i would end up but always new i want to do trauma, er, icu or ccu! So i am just curious what your days look like? what kind of stuff would i be handling. I am very excited to learn all this but scared too!!!!!!!!!!!!!!!!!!!!! any adv?