Which major in B-Commerce? Accounting? Marketing?
Yes, there will be plenty of students from Asia in your lecture and tutorials. Good chance that one will be assigned to you in group work and that you will see familiar faces throughout your years in the degree. There is also a chance that your tutors will be from Asian background and you will learn from them.
You sound as if that is a problem. Macquarie, like many other uni's has a large intake of students from Asian countries and they, more or less, keep to themselves and won't interfere directly with your studies.
But also bear in mind that B Comm degrees have leftover slots in your degree timetable for other electives which are not business related.
I have a friend has finished 1st and 2nd year French subjects while finishing his Accounting major. He has an interest in French and is finding it very interesting.