Attending George Washington University (DC) in the mid and late sixties I visited many ACW battlefields for a little diversion from studying, politics and partying.
Bull Run/Manassas, Antietam, Fredicksburg, Chancellorsville and Gettysburg were all within driving distance or a one night stay at a cheap bed and breakfast.
Visiting in March or April prooved to be a great time for good weather and sparse crowds.
I remember, in particular, on my visit to Gettysburg that there were hardly any tourists and you could walk almost anywhere on the battlefield. Park rangers were friendly and impromptu in being your guide or just enganging in conversation. There were souvenier shops and some great antique stores where weapons and ammo were very reasonably priced. I bought a Springfield Model 1855 percussion rifle musket for $200 and a Model 1861 percussion rifle musket for $150. Sadly, I sold them both to help pay for my education at about $400 each.
Today they would be worth $5000 to $10,000 at least.
I am so happy that the battlefields are being preserved properly.