If you have a coupon code, you can redeem it in the shopping cart. To do this, however, you must firstly visit the webpage URL www.party365.com/voucher/ to activate the voucher field.  When your shopping cart is displayed, the field "Enter voucher code" will appear, following which you can enter your voucher code and then click the "Send" button.

Already have your items in your shopping cart? No problem, they won't go anywhere - even if you visit a new webpage URL in between.