Hi bellblazin
I also live in Australia and this year will be my first summer with MS. Not looking forward to it either, as I recently returned from Bali and really struggle being over there in the hot weather.
I sympathise with your feet issue, I also have fibromyalgia which is worse in my legs and feet. My feet ache all the time. I used to place a heat pack on them all the time, but can't do that anymore.
I just rest near ceiling fan to stay cool if needed.