I'm going to agree...
Your
first job? and they're only giving you
3 days?
I've worked in a grocery store where the orientation alone was 2 weeks/80 hours: One week of computer training and one week of actually being on the floor and there were STILL some things I didn't learn in those 2 weeks which I had to learn on the floor.
I would NOT be happy making a critical nursing error on the 4th day of my job all because they didn't want to pay to train me 1 more day

and trust me, they will have no problem taking your license away.. after all you went through orientation, so therefore you should be prepared for EVERYTHING!