I am going to a uni post-offer visit day this Saturday and I want to write an e-mail to the asmission tutor asking if i can visit campus accomodation instead of going to a welcome talk. I don't want to leave my father on his own, as he doesn't speak in English very well :( and i'm working from 5.30pm till 8pm that day (i live about 2 hours away from the university and the campus accomodation tour ends at 4pm). Can somebody tell me/suggest how to write it?

Many thanks!