The fun includes:
(paraphrased from an email making the rounds)

-- a large scale battlefield involving over 300 re-enactors (live people!) who will recreate the atmosphere of the most famous battle in Scotland's History. Battles will take place at noon, 2pm and 4pm.

-- encampments that evoke the preparations for battle and of medieval times including a fully operational kitchen, blacksmiths, armouries and living quarters [ your basic SCA encampment? ]

-- a Clan and Family Village with 40 clans and families

-- a Food and Drink Village will have high quality, seasonal and local artisan food and drink for sale.

-- Storyville - a place for Scotland's story to be told through music, song and the spoken word. There will be many interactive games and activities for children.

-- The Main State which will have folk and contemporary music

-- Craft stalls and demonstrations

Sounds similar to the big Gathering 2009 event but with a war instead of the "games" and a much bigger emphasis on history, which makes sense.

Either the live re-enactment or the digital re-enactment costs more money. Not sure which it is.