That'll be good, I can get online and post to Facebook etc. when I'm in the park anyways over 3G data, but if I even just connect to the parks wifi, it'll save battery life to take more pictures....
If anything I utilize my Droid to take photos but in addition to facebook sometimes while waiting on ride or just relaxing it's fun to play something like words with friends or songpop with the rest of my group...
also if anyone is on songpop or scramble with friends my name is icegater84 and iceg@ter84 respectively :-P
Facebook only shows the world what you allow, its not hard to protect yourself using privacy settings.
I think there is a way to use personal technology in the parks though, in such a way that it enhances rather than detracts from the experience and escapism and togetherness. I love the Lines app from TouringPlans.com, but I always get terrible data service in the parks (particularly MK). Free Wi-Fi will enable me to use that app to check wait times and crowd levels at the different parks a lot more quickly and easily (i.e.: less time spent staring at my phone will I wait for it to load), which will help me to have a more relaxing and stress-free vacation with less time spent waiting in huge crowds. For me, that's a big plus. There are other similar uses for Wi-Fi, like Disney's own Mobile Magic app.
It saddens me that more people don't value time with their friends and family away from technological distractions (and I'm far from a luddite - I work in the software field), but whether or not WDW has Wi-Fi, that will continue to be the case. I'd rather see Disney promote ways that technology can enhance your vacation rather than hope that generally poor reception prevents people from using their phones in the parks. (It won't.)