Hiya Salty
Just to add to Kurnals advice...
Bear in mind that providing retained cover can be a very big commitment and can impact heavily on your social and personal life.
Firstly you must attend initial recruit training - most brigades train their retained in the same way as wholetimers nowadays which means a you could spend a total of 9 weeks at training school ( This is spread over a couple of years) It may not sound like much but it can soon eat into any annual leave you get with a full time employer. In other words it could mean no holidays for a while if you want to get your training done, and be classed as a competent firefighter.
There is always community fire safety work to be done, drill nights, additional training nights from time to time, station cleaning, weekly equipment checks and routines, weekend events such as fetes, galas etc to attend.
Plus you might get called out early in the morning and have to get up the next morning to do your full time job knowing that you also have to be back on call the next night and do station routines. Some weeks it can feel that you live at the station.
At some stations staffing levels maybe so low that you will find yourself almost always on call with little free time to have a social life. Other stations have a healthy staffing levels which means people do get regular time off.
I note that you said you have the opportunity to pick a wholetime, retained or day crewing stations
The recruitment process to become a wholetime firefighter can take anything up to two years, from first application due to the sheer number of people who apply.
The application process for Retained staff can also be long winded, retained and wholetime now sit the same entrance tests and even though retained stations may be desperate for new firefighters the selection process isn't accellerated to suit.
Day crewed station are manned by wholetime staff during the day and then either retained firefighters provide cover during the night or the wholetime crew respond via pagers. So to be considered for day crewing (during the day atleast) you would need to be a wholetime firefighter.
Not trying to put you off, the job is still the best job in the world, but its just worth thinking about these things first so you can make an informed decision .
Why not visit a few of the stations, and chat to the lads and lasses Im sure they would be more than happy to talk to you about the job and the pros and cons that go with it!