Even with some lightspeed internet you will still lag. I have 27 mb/s download speed and 4.6 upload speed last time i checked. I checked my ping and got a line quality grade A with my ping being 14, 2 jitter and 0 pocket loss. These good results are because i pay extra for my internet. But this shouldn't even be an excuse for them because most games will run perfectly fine with anything above 2 mb/s...even when there are like 50+ people in one spot.
This site will tell you:
http://speedtest.net/
If Disney goes against your results here than you know they don't know what they are talking about.