Interview tmmrw

So I have class at 11 am tmm & a interview tmm morning at 9:30 am as well. Their kinda in the same area so I’m still gonna go but idk what to wear. It’s in a bakery and I would be the guest representative. As far as greeting ppl, taking apps & cleaning the front etc. I have a blouse and I was going to wear it with a pencil skirt but for my footwear Idk what I should wear? Heels orrr something less because I might not have time to come back home and change. I drive & the job is 10 mins from my house & school is about 15. These are the requirements it would be my first job so also any tips on the interview. & another question, when a job list requirements as far as being friendly , needing to know how to sell their products persistently and much more do you rlly have to be able to fulfill ALL of that??