This is the situation: Ann is going to meet Fred at 6pm. She will give him something and then she has to go because she has another meeting somewhere else at 7.
Could you please give me some tips for sentences which can be used when I want to tell Fred why to be on time?
Something like "Please be there on time. It's important because Ann ..." (She has to be somewhere else later/then/after? She has something to do? She has to go?) <- I know it's wrong.
Thank you very much!