I've worked there as both a normal team member and as management. The interview will be based around the company's 'core values' - look these up on their website, memorise them and then when they ask you questions in the interview, try to relate your answers to the core values. The interview will be split into different sections of questions, one section for each value. Other things to consider are;
- Wear smart- casual clothes
- Have clean hair and fingernails
(They'll be noting how good your personal hygeine seems to be - not surprising, given that it's a food environment.)
- Try not to be too nervous, because they genuinely want you to do well, and will do their best to put you at ease. You can ask them to rephrase the question if you don't quite understand the first time.
- Bear in mind that it is a food environment, so some of the questions will be relevant to this. So you might want to research some things about food hygeine, for example
- Being outgoing is a Good Thing