good luck mate.
its hard to be in a pub and not chuck your loose change in the machine just incase.
but the loose change is always followed by changing up notes as once youve put some in u feel robbed and wanna win it back.
and it just gets worse cos once u lose that tenner u wanna win that back. etc etc.
you done well to be able to watch your mates playing the machines and you not needing to!
if u done it before u can do it again!
GOOD LUCK