The only stadiums I see myself getting to this year are:
PNC Park - I have plans the 1st week of June to see the Bucs and Mets
Citizens Bank Ballpark - Friends in Philly and since I have never been I must go!
Tropicana Field - Only if the Rays are in the playoffs will I get a chance, since I wont be in Tampa/St Pete until 10/12 for a week
New Yankee Stadium - May 18th vs Baltimore
Nationals Park - I want to go, just to hang out in DC!
so that would add 5 stadiums to my list, which would be awesome to do.
I of course will see plenty of games at Citi Field this year as well.