D800 w/ 24-70 f2.8 or 50 f1.4 for Disneyland and Universal Studios Hollywood?

Forget the Nikon and take a NEX-6 with a 10-18 zoom in the Sigma 30mm 2.8 which you can buy for about the same price as the 24 -70 Nikon. After lugging a 5DMk2 around Europe for two weeks in the heat I can tell you this is a much better set up. You will not be able to enjoy yourself and probably won't get any pictures better than the postcard you can buy. Family shots are the most important in the NEX will do them extremely well.