Never been myself. But it sounds like a lot of fun.
From my experience, young children do not handle baseball + hot weather well. I took my son, he was 4 at the time, to CWS game here in town and he was ready to leave before the opening pitch. If it's hot, I wouldn't go through the trouble, but if the weather's nice, it sounds like a great time.
Do you have 2-year old twins?!