I pre-ordered a S20 Ultra 512GB after being offered a 20% student discount on the entire S20 range at Samsung Chadstone. They told me I wouldn't be able to get the Buds+ as a pre-order bonus unfortunately but that I would get a 10,000mah Wireless Battery Pack for free, which is pretty cool.
Staff member told me this was running throughout all their stores. Only thing I had to do was show my student ID card or proof of enrollment and sign some forms.
Pretty sure there's something similar on the online portal but this way you get it in store on the date! Not bad :)