I counted my transactions, according to my e-Statement, and I have actually been allocated QFF points for more than 50 transactions per 24 hour day.
Not by much though ...
For my 5th. November statement, I had three 'series' of transactions ( either Coles or Woolies ), where I did 53 or 54 tranactions. I got all of those points.
So, I'll be waiting for my first week of December statement, to see if my 150 - 200 transactions a day actually turn in the points expected !!
Further to my experience thus far ...
Don't do much more than 60 - 70 transactions on any Woolies / Cloes Self-service machine. The 'crash' sequence simply takes too long to recover, and the staff at my 'locals' are just about 'over me' ...
i've found, that by doing just 60 or so, it doesn't crash the machine, and it returns to a full 'operating' screen as soon as you finish paying.
I'm returning to the same stores twice a day.