Never used one before but I know people always seem to be clamouring over them... I finally have DC old enough and reason to use one.
Voucher offer is one person free with one full priced ticket. £64. Must be booked in advance.
A non voucher 'normal' ticket booked in advance is £37.
So rather than really getting one person free, I'll save £10.
I know it will be tied up in Ts & Cs but AIBU to think it's a bit shit?