If we're looking for ideas - why not make an (adult) admission ticket a voucher redeemable at the Crown for a bogoff drink (or a quid off or something) within an hour of the final whistle ? Max one per person per game so no-one gets mugged for their ticket.
Might get more people into the ground

and would certainly get more into the pub afterwards

- and once you're in there celebrating a victory

you're not just going to have the one, are you ?
