An Arcade Is Threatening To Pursue Legal Action Over A Broken Arcade Card. Any Advice?

So around a month ago, me and my 5 friends befriended a worker who is supposedly autistic but never showed or did anything that made us belive that. Eventually we came across him using that punching machine and saw that he had 99,999,999 credits. We asked and he said all workers could create those cards. We convinced him to give us 2 of them, and proceeded to use them for around a month. During the month 2 of my friends each got a TV with the amount of tickets we obtained. According to one of our friends, they are saying we stole the TV's and that we have to return everything we obtained with the cards. I only got a large stuffed dog. Tomorrow my friend and his family (which he shared the card with) are supposed to go in and return their stuff. My friend wants me to come clean and admit and return stuff with him. I don't want to get involved, especially since police might get involved, but also don't want to ditch my friend. Any advice on what to do?

extra info: no specific rule against using the cards

around 10 people total used the cards but my friends family are the ones who got caught

my parents don't know about the cards, and i would prefer if they didnt since i would be punished