Withdrawal fee at Alpha Bank was €1.80. Nothing huge, but worth knowing.
Alpha Bank ATM was not 24/7. Was closed when I needed it.
Alpha Bank ATM in Athens was low on cash, but I managed to get €500 with a foreign Mastercard.
Eurobank charged €1.80 to withdraw. A bit annoying, but the ATM worked fine.
ATM at Attica Bank was simple to use and worked without issues.
Attica Bank ATM had no wait time. Charged a fee with my Dutch debit card though.