You can use a voucher for part payment of a food purchase that is more than R100. If you have two and are spending more than 100, it's a bit of a pain, but just split your purchase into two and pay separately. Once I had R99 of purchases, and I said I didn't mind "wasting" the last R1 of the voucher, but it wouldn't go through, so the manager just added a bottle of water to my purchases, I used the voucher and paid the balance with my card, then immediately did a refund of the bottle of water. Yeah, a bit of a hassle, but hey - it's free money. I like using my points for WW vouchers because at all of the other reward retailers, I get 10x Discovery Miles, so in some sense it's a "waste" to pay with a voucher rather than my Discovery card at those retailers. At WW, there's no Miles Multiplier.