I always avoided travelling over long weekends, prices were higher, airports were busier, it was generally school holiday time and more screaming kids, but a few years back I decided we could be wasting a good free three or four days and have tried to travel each Easter and October (Labour Day in NSW).
Easter 2012 - Wilson Island, Queensland
Easter 2011 - Bay of Fires, Tasmania
Easter 2010 - Daintree/Great Barrier Reef, Queensland
October Long Weekend 2012 - Hobart, Tasmania
October Long Weekend 2011 - Lord Howe Island, Australia
Or we use the public holiday to extend an otherwise already lengthy trip, such as:
Australia Day 2013 - Waikiki, USA
Australia Day 2012 - Tahiti, French Polynesia
I'll keep you posted in a few weeks where we spend Easter 2013.