Finally got a job interview ..

I 35f have been looking for a job for 4 months , I have been out of work for nearly 10 years while being my dads primary carer , he passed in May and I haven’t even had any successful applications until today I had a call about a job in a pub I’d applied for . For some reason I thought it was bar work but it’s not it’s a kitchen Porter roll. I mean it’s a job but it’s going to be miserable . Firstly I have no idea what kind of outfit to wear for such a job smart trousers, long sleeve black top, smart shoes ? Do most kitchens allow their staff to wear trainers ? How miserable will this job be and should I save my sanity and not bother .