Hi jj3000
I work at CHCH tower and have also worked as an Instructor at our ATC college in CHCH. We often get potential recruits brought up to the tower at the end of their testing day so you may be brought up to the tower then. What day is it?
In my experience the candidates are pretty jaded by then after a full on day of testing and interviews. I think it would be good for you to come up to the tower for a few hours prior to your testing day. This will benefit you in that you get to see the tower in a fresh light, talk to a few of the controllers and see how we work and what we do. This would also be good for your testing day as you can then tell the interviewers that you have been to a tower. This shows your interest in the job and will give you extra credit. I visited several towers before I applied and found it very useful. It helped that I was a pilot at the time...
So I am happy to either set up a visit or have you come in when I'm working and you can get the low down from the coal face, so to speak.
I don't use this forum much but I think you can PM me?? Give me the date of your interview and some dates/times that suit you for a visit. What is your background?
Hope I can help