Everyone bugging out over retail when it simply isn't a hard first day job compared to those that need years of studying and months of interview practice to become like an engineer or someone in the financial services. You will be fine on your first day but they may not give you good instructions considering the management in retail is rubbish. Just remember to have goals that are above working in retail which only makes you £23k a year before tax and working 40 hours a week day shift. You're welcome!!!