FANS are expected to travel from as far afield as Aberdeen, Inverness and Jersey to see Wrexham take on Southend in the LDV Vans Trophy.
Officials from the troubled League One club said supporters appeared to have heeded the call to get behind the team.
Yesterday hundreds of fans queued to buy tickets for the Sunday, April 10, Millennium Stadium clash.
After beating Oldham 6-3 on aggregate in the semi-final, Wrexham manager Denis Smith called for all of Wales to support his side in the final.
Wrexham officials are delighted at the take-up of tickets with only a few of the highest price Middle Tier seats left.
Club secretary Geraint Parry said the club had already received hundreds of postal applications for tickets.
He added: "They're from all over North Wales. There will be a coach-load of supporters from the Caernarfon area and more from mid Wales and Aberystwyth along with our usual support from the Wrexham area.
"We have also received applications from as far afield as Aberdeen, Inverness and Jersey. We will have plenty of support in Cardiff."
Because it is in financial administration the club cannot accept credit card bookings.
Transactions must be made by cash or cheque - with cheques made out to "The Football League".
Mr Parry said: "Fans should include name, address and a contact telephone number."
Wrexham's sponsors - Just Go -were appointed official travel agent for the day and they are now accepting bookings for package deals to Cardiff. Further details are available on 0870 70 90 007.