Last Thursday I went with my daughter's class to Riley's Farm in Oak Glen, California. I really didn't know much about the place but it was a pleasant surprise. The older kids got to pretend they were fighting a battle from the War for Independence while the little ones went to the farm section.
I'm not quite sure how the colonial stuff worked, I was busy watching 5 & 6 year olds churn butter and dip candles, but it looked like they were having a blast. Some of the kids dressed up for the period. The farm hosts all sorts of colonial themed events all year round. I can't comment on the accuracy, but I think it is a great thing for families to experience a taste of another era. Anything that introduces kids to history in an entertaining manner is a good thing. I'm hoping to take my kids up there again for some of the historical events.