I just got home yesterday from a DL/WDW trip. The DL part was tacked-on kind of last minute because I didn't want to wait until next summer to see the 70th stuff, which is when we intended to go to DL (we alternate WDW and DL for our yearly Disney trips). The hype on this thread definitely helped make that decision, lol!
Anyway, I just wanted to share that a highlight about the 70th for me was the Great Rainbow post-show after WoC. I haven't heard this mentioned much! Of course, PTN is so so good (I hadn't seen it before but made sure to catch it every night); Wondrous Journeys, Tapestry of Dreams, the new WoC, and all the decor were all great. Even the cavalcade was better than I expected, made us feel pumped. We also loved doing the DL Key scavenger hunt. But I think Great Rainbow by Scott Hoying is a really nice song, and hearing it with the fountain and lights show after WoC was really moving. A sleeper hit--so don't walk away when WoC ends, stay for Great Rainbow!