Log onto http://www.premiertravelinn.com
click on Great Days Out (left hand side)take pick from 500+ days out including theme parks, stately homes, aquariums etc.
Deal are two for one adult admissions and kids go free admissions.
States they will e-mail voucher to present on entry when you book a stay at their travel inns, but every deal you select has'send me my voucher'which I clicked on, filled in e-mail address and voucher was immediately e-mailed to me.
Does state on e-mailed voucher only to be used in conjunction with stay at Premier Travel Inn and individual e-mailed must be present within party attending the attraction.
But, I can't honestly see how they will police this as you have your voucher.