Another point I forgot to make is:
Depending who is on duty, you may or may not be able to buy tickets for performances later in the day / night, sometimes I have given them to mates to use..however, some staff will ask to see your card as well as the ticket. Also, in Eastbourne you can expect to be searched for hidden food or drink which is tempting as Asda is next door to ours. Local paper did a survey where it seemed that identical items purchased from the CW and Asda had a difference of about