free chocolate milkshake to takeaway - minimum spend required

just received this email:

It's available when you spend £7 or more on your first order using the Order & Collect feature on the GBK app.

So stop reading this message immediately, open the GBK app on your smartphone and make sure that it's there under the 'Rewards' section. It is? Good.

All you have to do now is redeem it by using the 'Order and Collect' feature on the app. Simply add a chocolate milkshake to your basket, along with the rest of your order. Then add the shake reward and voila! Your food and freebie shake are being made and ready for pick up at the location of your choice.

Terms and conditions:

Free chocolate milkshake when you spend £7 or more, between 10th April – 29th May 2017. Valid on your first order on the Order and Collect service through the GBK app only. Not valid for in-store purchases by showing an email offer at the till, either from GBK or any third party website. Cannot be used in conjunction with any other offer, set menu or GBK app reward. Offer valid when collecting from any GBK restaurant in the UK mainland, excluding GBK KidZania. Chocolate milkshake can be substituted for vanilla, lime, banana, strawberry or salted caramel flavours. Can be substituted for a fresh and fizzy drink if required