yourflight attendant:
MEL base has been getting heaps of overnights, 10+, for the last few months. FEB roster is down a little but there are 2 less days in the month + SYD base + less annual leave??? = more crew available for the roster.
MEL crew are regularly getting BNE overnights of up to 24 hours, possibly because we wont go sick whereas BNE crew not living near the airport will go sick for the 4am-5am signons. I am still not seeing many day trips either and haven't for a while.
Lastly at the end of the day there is nothing we can do about the overnights. You cant budget your life on them as they are a bonus if we get them in the first place. I applied for E-jet and found out o'nights would be a minimum which suited me but obviously not you. I don't know why you didn't know this before applying as it was common knowledge in MEL.