Use of Citibank debit plus in South American ATMs.
Actual FX rate for ATM and purchases always very good, within 1% of spot.
Ecuador
Banco del Pacifico - adds a US$0.50 fee per withdrawal
Banco Pichinca - no fee
Scotiabank - no fee
Peru
Interbank (I think this was a generic type machine, not a bank) 14.5 sols fee (about A$6! cough, I'm didn't realise it at the time!)
NOTE: The fee doesn't appear on the Citibank monthly statement, just the withdrawal amount and the A$ amount, including the fee.
Argentina
Banelco (again, a generic machine, not a bank) 53 Arg pesos fee (about $7! I knew about this rate but had to use it)
NOTE: Again, the fee doesn't appear on the Citibank monthly statement, as above
Brazil
HSBC - no fee
Canada (OK, Nth America)
Royal Bank of Canada C$3 fee - I declined this!