I was cabin crew based in tsv for a while. (not with m a c a i r).
I had a friend who lived a lot of the time on magnetic island - the ferry service is pretty regular, and she didnt seem to have too much trouble getting to work... The only times it got tricky was call outs if it was late or very early.
The m a c a i r girls seemed to be pretty happy. Pretty close knit group i heard. Worked with one girl who used to work there, she seemed to enjoy it.
They were going to get the saab2000, dont know what ever happened there though. Other rumours have them being taken over by Rex, or expanding their saab 340 fleet and competing with qf, etc... rumours of course.
Good luck. They prob not recruiting atm, but Alliance is fun to work with. The tsv base is a good bunch and the flying is a lot of fun.