While a fantastic lens, the 24-70 is a heavy lens to use as a walk around, especially when your main intention is to take some snaps at Disney.
I agree with you in principle, but then weight is subjective. My gripped 7D and 24-70 is roughly 2kg in weight and I don't find it too much of a problem.
TBH, if going to somewhere like Disney, my biggest worry would be hanging onto the thing whilst on the rides as the weight will soon multiply up due to G-forces
