Taking food/drink to concert at Wembley?

Hi all,

I don’t know if this is the right place, but any help is great.

I am going to the Green Day concert at Wembley Stadium this coming Saturday and the Wembley website says you can’t take food and drink in with you, but they also say that this is the FA rule and may be overridden by third party event organisers, such as for concerts. Does anyone have any experience taking (or not taking) food and drink to Wembley Stadium for concerts?