#1 Nah, all the Delta databases will have been in that datacenter (from the sounds of it) - you'd need all that information to produce anything useful and it would be a right pain to modify the KLM systems to handle the data etc. You might as well do it by hand.
#2 I believe all passenger reservations are stored on a central system to aid access of the TSA etc. Like APIS. So I guess you might be able to get data off of that?