Well, sort of. It's a pain in the ass to use. If you're not using it continuously you have keep accepting the terms. Every 1/2 inning break I'd take my phone out and have to do the same thing to get on. Kind of a deterrent.
Thankfully the last couple games I went to this year I had my new iPhone on AT&T LTE and I could actually do stuff on the internet as opposed to when I was on 3G.