Welcome to OPCDO.
Go to www.vcdl.org and at least sign up for the VA-ALERT free email newsletter if not joining.
Check the stickies at the top of the Virginia forum for OC breakfasts every Saturday and OC dinners every month. Come out and meet the rest of us.
As for OCing at Colonial Williamsburg? This site is full to the gills with stories of folks who have done so and received both enjoyable and educational support from the interpreters and other visitors. If time permits, contact OCDO member Ed and ask for some of his free OCDO cards and take them with you to hand out to anyone who asks about your open carrying. Be a good ambassador among the unknowing.
Stop by the gunsmith and the powderhouse and see if one of the interpreters notice you OCing you and use you as part of their educational talk. Same for the mustering and parade of the troops - yes, the search function is a PITA but try to find Ed's post about OCing and the troops.