Unless you're going at a peak time, such as a summer weekend early in the day, the lines aren't especially long, and so you won't save much time if any with the advance purchase. Allow 4 to 5 hours to see the whole museum. The new 14 minute movie is terrific and well worth the time, a retrospective from some of the best all time players, what baseball meant to them. Don't miss heading back to the research library area behind the hall of fame display on a curving up-ramp on the right. There is a sportscasting display, very interesting, that can't be reached from the main museum floors, only via that ramp.
We also bought on site. Maybe you could call.
I went there in person & there was a reference tickets for veterans, but to buy them online I've got no clue. The safest bet would be to call them.
Buy online
We bought tickets there, so not sure. Sorry.
Can not answer. We bought out tickets on site
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