EXCHANGE EDINBURGH TATTOO TICKETS .

HELP CAN YOU SWAP TWO OFFICIAL TICKETS ON THE FRIDAY 3RD AUGUST FOR TWO ON SATURDAY 4TH.I have two tickets for Saturday August 4th ; 87.00 paid I can send proof. ALL I WANT IS A STRAIGHT SWAP OR SWAP AND PAY THE DIFFERENCE. My sister leaves for Canada very early on Sunday 5th August. CAN YOU HELP