I believe it is all resorts and parks. We were there in feb. and all star sports had it. It was spotty even in some of the parks buy our I phones worked ok. Hope this helps. Have a great day!
I believe all have wifi, not sure how reliable they are. When were at Art of Animation I had wifi but it was pretty spotty and lost it sometimes. I know that Magic Kingdom has wifi but not sure of the other parks.
We were at the BC last week. Our wifi was great. It was the same speed as home. I found no lags. This was in our room and we didn't try in public areas.