I have had 12 of these plans (6 still active) and still use the credit card every month for purchases (obviously, otherwise i wouldnt be able to take up the offers). Never missed a gift card - albeit the latest one is 2 weeks late.Hmm, I'm not so sure. Firstly, with Citibank I absolutely wouldn't take the word of their Manila chat-bots or the 132484 CSR's over what their actual published T&C's say. The T&C's clearly say they are going to allocate payments to the outstanding FPO first, before other debt types subject to higher interest. They even highlight this fact with a "WARNING" sub-heading and they acknowledge this is against the law AND they offer a way for the customer to change this (that will cancel the FPO and disqualify you from getting the gift card which is the whole point).
They made it so I can never successfully claim the free gift cards while at the same time making it very hard to work this out for 16 weeks before you find you're not getting the gift cards. In that 16 weeks I will have paid 4 lots of setup fees for FPO's that were never going to nett me any gift cards. Clever Citibank.
I just have my card set up to pay the full statement balance every month by direct debit and it works like a dream. I get the gift cards (albeit most recent one is late) and hasnt cost me a cent in interest fees, or whatever aside from the setup fee.