If you register on their website and tick the box that says ' Sign up to receive news and offers from AMF Bowling and receive a free game voucher!' you will receive an e-mail with your free bowling voucher.
They ask for very little info - only e-mail address, name and nearest centre so you should be able to register with as many e-mail addresses as you have.
Conditions: Maximum 6 People, can only be used Monday to Thursday, only valid for a month from the date you receive the e-mail
I know that similar deals have been posted in the past but all have now expired so thought it was worth posting for those that don't know.
Mods: if this is in the wrong place then fell free to move - couldn't work out if it is a deal, freebie or voucher