NEC Show ticket Offer

In the current magazine there is a ticket offer for the February show, just complete your details on the voucher and present it at the Peage at the NEC,

Question, How many does this Voucher cover as Mrs A and I will be going on the Tuesday, 17th February which is  the day we planned to go anyhow.

Can someone at the Club confirm please, as far as I can see it is not clear.

Admiral