I would say 1984 - Second trip, getting more experienced on how to see and do everything efficiently. At Epcot: Horizons newly opened, park still "brand new", that marching band playing near the fountain, Odysessy open, original Communicore, spacey-rainbow character uniforms. MK: CoP still popular, IYHW going strong, Magic Shop still open, Adventureland still "pure", 20K, Skyway still around. Also 1990 MGM open (Star Tours!!), Norway open, sixth trip but after 3 year absence, vacation experience "refreshened" by new park, added attractions.