I did one earlier this year, also for my Canadian work permit. It’s easy, but it’s also easy to zone out, especially during the listening test. As long as you focus it’s a doddle.
I found a few of the questions open to interpretation, but try not to over think it.
The speaking one is interesting: I got one question I couldn’t care less about and one that was quite interesting. Just remember all they are looking for is that you can converse in English. My examiner said she could chat to me for hours 😁
It’s a pretty long day, though: I had to get up at 5am to get there in time. Fortunately, the whole thing finished in time for the 6 nations so I went and got p****d in a pub😂