Contrary to other reports, the Donny game isn't all ticket, they are just saying you can ring up and purchase your tickets if you want to. http://www.hullcityafc.net/news/article/doncaster-ticket-story-242246.aspx See you there guys.
Hope that is the case, but I spoke with a woman from Donny admin office yesterday and she said they don't operate a pay-on-gate system at the Keepmoat, so tickets must be bought on arrival or before in order to pass through the turnstiles.
Nobody said it was all ticket, just that you can't actually pay on the gate(you have to go and buy a ticket from some centre somewhere at the ground).