"We will probably see crowds we probably haven't seen before, or since the centennial," said Litterst. "For the next couple weeks, there won't be many places to get some alone time here."
But for those who want to get away from at least some of the hustle and bustle, he recommends a visit to the East Cavalry Battlefield Site east of town and the park's Big Round Top, which has a great walking trail.
The battlefield looks much different from even 20 years ago as the NPS worked to make it look much closer to its 1863 appearance. Trees have been removed in some places and orchards planted.
Thousands may make the July 3 Pickett's Charge commemorative march, timed to the actual assault.
Those with younger legs may be in front. And, like battles of old, there will be stragglers.
"There will be not be a shortage of people with stories and pictures of great-great grandfathers who made that march," said Litterst. "That is a neat part of the story."