Ann and Brian opened their restaurant. They offered a reward to return customers. They posted the reward notice in Instagram and/or Facebook. Return customers had to post the receipt on Instagram to claim the reward of a 10% discount. Some return customers didn't see or respond to the post, but asked for the discount reward in person. When Brian refused, the customers threatened to sue them.

• Advise Ann and Brian on the legal requirements of contracts; and
• The legal issues.

requirements: provide use cases and laws for reference and support. IRAC must be used to answer this question. Must have footnotes and Referencing style - AGLC4. try to give as many as possible because I am not very good at writing. To write 1000 words minimum 800 words, thank you very much.