Will they hire me still?

I just went in for an on-site visit for the lot associate position. My only thing was is that my ride can only drop me off at 7:30 on the weekdays- not the weekends i could do 7 on the weekends- and he said he'll call Tuesday bc they really need someone to come in at 7 on the dot. If something changes b4 Tuesday and i worked out a way to come in at desired time should i call and say i could do it? The only other thing they said they had an opening for was cashier and while i can do that....I'd rather not.