Went to the Oval last week for a cricket match. The website states the ground is cashless, so we thought no need to take much money with us. When we got there, we went in the club shop and selected some shirts for the grandchildren. After queuing for an age, we were advised that 'the wi-fi was down' so they couldn't take card payments. We were then told we could pay cash, but only if we had the exact amount as they (obviously) had no change! We only had enough cash to pay for about half of our selection, so had to leave some. Then went to the food concourse only to find most of the outlets had stopped trading as they couldn't take cards and were unwilling /unable to take cash! Also worth mentioning, that while we were in the club shop, there were several youngsters on a school trip who obviously had a few pounds pocket money to spend, but (before the tills stopped working) had to leave the shop empty handed as they couldn't spend their cash! So cashless not always a good thing!