Hi everyone, I am planning to apply for SBI CC for the upcoming sale. I read multiple threads here, and found out that if you use CB card for instant discount purchase, the 5% reward will be deducted in future. My question is can we really use CB card during the Amazon sale to get 10% Instant discount? Has anyone done that in past? Does Amazon apply 10% instant discount for CB Card? I am okay if they deduct the 5% CB later on. I do not want to get an SBI Core CC just for sale.