No, I won't be at Kiama tomorrow. My wife and her family are catholic and, from what I gather, Easter has some religous significance. I was gonna go down the Jambaroo today but the weather closed in a bit and I didn't feel like drving through shit weather for a few hours.
In regards to the fans, talk to some of the lads while you're down there at Kiama and I'm sure they'll offer some good advice. Also, be careful when adjusting your aircon to be at its coldest setting 'cos this means the compressor will run more often and shorten's its life.
Take a multimeter down there with you and get someone to test the power to the fans and to do some other basic diagnosis of the fault.