yet another job interview question about disclosing

Hi Everyone. 

I have a job interview tomorrow, I cant decide whether i should disclose or not, I've done  a search but I cant find a solid answer other than 'its good to' or its bad to'. 

Im applying for a part time a job in a supermarket, it says fully flexible shifts between 5am and 11pm.

I need a routine, they say they are fully flexible but I hear horror stories about managers not being able to organise a rota more than 3 days ahead. I really need a regular start time, and not to be given a different one each day.

Im also worried about being constantly messaged by a manger changing my shifts at short notice.

I also don't want to have to use an app for anything.. I often leave my phone it in the house when I go out. I'm not someone who has their phone hard wired and I see it as an intrusion. 

Legally do I have to disclose in the interview? will hitting them with 'demands' if I get the job make me a pariah?

should I say all this in the interview?

what would you do? I need a job but I don't need a breakdown. I worked there in the past and I left because of a member of staff bullying me (before I was diagnosed) but he's still there. Although to be honest the place I went to next was much worse and only having one person doing it would be a relief.