I'm Andy
Nice to meet you!
I don't know what the deadline is... but I'm sure that if you accept the offer, tomorrow (today), it shouldn't be an issue, at all. I've tried to set up my timetable, however, I think you have to attend that enrolment session to physically enrol into subjects... However, don't take my word for it. I'm the first kid in the family to enter the tertiary system and the administration side of things is proving to be a harrowing task...
I just hope that the majority of those enrolled in this course can speak English...