The Oklahoma Historical Society has a website for the reenactment which includes a schedule, information about the event, and a map to the site at:
http://www.ok-history.mus.ok.us/Creek/Battle.html
While most visitors are attracted by the living history component of the event, there are a number of speakers on a variety of topics related to the battle or the Civil War in Indian Territory.
For anyone unfamiliar with the significance of the site:
Cabin Creek crossing was on the Ft Scott-Ft Gibson Military Road -- a critical supply line for the Union troops at Ft Gibson. There were two significant battles around the ford at Cabin Creek crossing. At both, the Confederate intent was to capture a Union supply train (wagon train) bound for Ft Gibson. Watie's Regiment was present at both. The first battle was in the early summer of 1863 at which high water on the Grand River prevented the Confederates from consolidating their forces. The large escort for the train drove the Confederates away after a sharp battle at the ford. (There were no bridges over the Grand River -- only fords and ferries). The second was in the late summer of 1864 and, as Steve Whitlock stated, was a victory for the Confederates who routed the Union force, captured the train, and were able to return to their own lines (and their refugee families) with about 200 loaded wagons of much needed food and clothing.