Yeah DL's implementation of their 'fast free' wifi has turned into a convoluted and confusing mess. Poor international hit-or-miss service that you still have to pay for if its available, and useless connectivity on regional carriers.
Would be good if there was some information available for the widebody fleet on what routes and equip has what service. Its a total crapshoot if you get internet and how much it costs even on TATL.