I flew on a DL L1011-500 from ATL to HNL in 1987 in F on a bump voucher. The seats were the first generation "sleeper seats", with fold out footrests and significant recline. I don't recall anything else (IFE, service), after all, it was essentially a domestic flight on international metal. I do not know if there was a J/C cabin on the L15 at that time.