I only drink "real" coffee, as against instant which I cannot stand, and therefore I find that most cafes don't make it quite strong enough for a flat white.
I have started asking for half an extra shot each time now and it is so much nicer - sometimes I cannot taste coffee but only milk - some make it so weak!
The other day they gave me the extra half shot in a little cup to add as much as I wanted - great idea also - mostly they do charge an extra 80 cents here for one extra shot which sounds like such a rip off however coffee seems to be over $4 now everywhere here and even up to $4.50.
I bring my coffee over from Sydney - think I have mentioned this before - my family have been buying at the same place for some 60 years now!