This is just my opinion and I know that a lot of people feel that Williamsburg is great, but I think it is the biggest ripoff in the nation. First they charge you (considerable) to get into the site. That would be great if it were a walled or fenced area but you can walk in for free from non-historical Williamsburg. It is nothing more than just another part of "regular" Williamsburg. Then on top of that to see anything that you cannot see from the free entrance they charge you extra. Most of the buildings are closed to tourists because they are privately owned homes and the owners live there and don't want a mob of tourist wandering through their house. When you do pay extra to see allegedly "historic" buildings you find out that they are actually reproductions and they are not even sure just how exact a replica they are. Sure you can watch a couple of period things like candle making or blacksmithing but other than that you walk away with sore feet, a considerably lighter wallet and very little additional knowledge other than what the outside of period, recreated, buildings look like.
Not a big fan!
So instead you go to AK to see the stunningly authentic Baob trees and ostrich eggs on the Safari, or MK to see the breathtakingly lifelike 5 foot tall mouse?
I'm sorry, I really don't mean that as a slam against you in any way, and you're certainly entitled to your opinion about Williamsburg. It just struck me as a tad ironic, since I hear so many non-Disney fans talking about how "plastic" and "unreal" it all is.
I personally love Williamsburg. To me, what you're paying for is the reenactment of Colonial life. I neither know nor care which buildings are original and which are replicas, nor how exact the replicas may be. I enjoy watching the "citizens" go about daily life. It's especially fun to relax in the Taverns, playing period games with reenactors.
My favorite time of year in Williamsburg is Christmas. There's so much to do, from a real Colonial Christmas dinner that looks nothing like the foods we eat today, to special musical performances, to decorations tours. One of my favorite memories was on Christmas Eve a few years ago. We went to the Governor's mansion for a period ball. Two of the "Governor's daughters" wanted to know where we were from. When we said "Florida," they got the most alarmed look on their faces, and wanted to know how it was possible to survive in the "native territories!" We ended up in a lengthy period-appropriate discussion, with them absolutely playing to the hilt the role of pampered Colonial-era young women talking with travelers from an exotic land. When we left that night, it had just started to snow, and everything was stunningly picturesque.
I'm surprised to hear that you didn't find more to do there. We generally stay for a week, and never feel we have enough time to do it all. I really want to go back over Halloween one year.