I live in Arizona and typically attend a bunch of spring training games each March. The spring training tickets typcially go on sale in November/early December. So, any day now.
That said, tickets at Maryvale have never really been in massive demand unless the crew is playing the Angels/Cubs/Dodgers/D'backs. I expect a small surge of Wisconsonites this spring, but I doubt its more than an extra 2k fans per game. Most Maryvale games get like 5k to 7k fans. Maybe most games this spring will draw 8k or 9k. Also, remember some people might not buy tickets with the lockout pending. I personally typically buy a bunch of tickets in December. I wont do so this year until the lockout is resolved. So, if having to plan a big trip from Wisconsin, I bet that scares some folks away. That would be a lot of cancel/postpone if the lockout drags on.