Keith's update: According to CNN, Trump has cancelled plans to visit KSC. So much for the photo op of his jet landing at KSC shuttle landing facility. Apparently they could not find a rally location offsite in a nearby location that would meet the expected audience numbers. I've also heard that there was a NASA concern that the campaign would try and do a tour where giant NASA logos would appear in campaign photos.
Donald Trump adds Sanford, St. Augustine to Florida swing, FloridaPolitics.com
"In addition, he's expected to tour Kennedy Space Center and meet with the Economic Development Commission of Florida's Space Coast. That activity originally was scheduled for Monday but the Space Coast EDC reported it has been postponed to Tuesday. No details are yet available."
Donald Trump to meet with Florida space officials Monday, Orlando Sentinel
"Republican presidential nominee Donald Trump has accepted an invitation to tour Kennedy Space Center and other locations on the Space Coast before sitting in on a roundtable of space industry leaders on Monday, Oct. 24. ... So far, Democratic nominee Hillary Clinton has not accepted invitations to tour the region. Lynda Weatherman, president and CEO of the economic development commission of Florida's Space Coast, said she hopes Trump's visit encourages Clinton to follow suit."