I love Williamsburg! We have been there 4 times, last Fall being one of the times. You may want to hit Busch Gardens on of the days. There is soooo much to do there. Where are you staying at? We have been staying at The Woodlands. I know when we were there last time there were several groups from schools. There are a ton of Restaurants outside of Williamsburg (Historic area) but we usually ate inside Williamsburg. The Hospital and Museum have a really nice cafeteria to eat at.
I live an hour away from Williamsburg (I posted on a post of yours yesterday). Though I really don't think I could make it there for the day.
Have an enjoyable trip....we visited over the summer since we're in MD but Williamsburg is about 2 1/2 hrs away from us. My girls loved Busch Gardens!
Ang
Grace, Speed & Power....Girls Lacrosse