Doesn't affect me as I'm a season ticket holder but the announcement at the beginning of the season seemed to suggest that it'll be pay at the gate at a higher than normal price but advance tickets will be available for the normal prices:
http://www.raithrovers.net/19998/admission-prices-arrangements-reviewed.htm
"Finally, we are increasing admission prices for the visits of Hibernian FC and Rangers FC reflecting increased stewarding and police costs for these fixtures, although there will be an opportunity to pre purchase tickets for these matches at normal rates (more information on detailed arrangements nearer the time)."