I was a cook from 2005-2009, Reg Force. I'll start this with I have a lot respect for the people in the trade and worked with some great people during those years.
With that said, it was some of the least enjoyable years of my life. I wont beat around the bush, I hated my time in the trade. I was working as a cook just after highschool and wanted to join the CAF since I was a kid (family trade). There are lots of people who love the trade unfortunatley my experience made me bitter and I hated it so much I released and went Armoured Reserve.
I spent 6ish months away my first few years as I was on every ex and supporting work ups for tours. The field was better than Garrison. Field days were long and busy, some days I was up at 0330 to start breakfast and would work until 9 or 10 at Night. Sometimes cooking sometimes tasked as a driver or co-driver for things like convoy ops.
Garrison was shift work, early shift was
0500 until 1330 or longer if the late shift needed help. Late shift was 1030 till 1830. Things like Mess Dinners were tossed in and I've worked some from 10am until 3am.
If you want to do soldier skills in the field, I would not recommend this trade. When I was in there was very little appetite for cooks to get good training outside forcing you to do the winter warfare qual you already have because they need people to make the ex happen. Maybe it's better now.
I'm on my 3rd Military trade and I encourage anyone interested in joining to do the research before picking a trade to see if it's really something you're interested in. If you want more about the day to day you can fire me a PM.