Before the summer between my son's HS Junior and Senior season I went to my boss and explained that this seemed like a once-in-a-lifetime experience and could I take a lot of time off to follow this? I had saved up a lot of vacation time. His answer? "If I were you I'd do it!" He has kids too. Thats the kind of boss you love to have.
For the last several years, our vacations have revolved around baseball...we have a younger son too (12) whose team is pretty successful. I'm lucky to have a wife who enjoys it as much as me. We don't take much other time off from work...and the last 6 months at work I've really paid them back, so I'm not feeling guilty either.
A friend of ours summed it up best to my wife a year or so ago...this friend said, "just think about when your son is 30/40/50 and how he'll remember the summer he and his dad travelled the country playing and watching baseball...how much better can it get?" That kind of sums it up. Wouldn't wanted to have missed any of it!