One more thing...
Knowing I was going to be out of contact at the end of October I paid my bill a few days early. The problem was the Wallet app would only let me pay the charges that were posted (~$900). It would not let me pay the pending charges (<$80). To my surprise I was charged interest on the 2nd.
I tried to resolve this through the Wallet app, but each time my message couldn't be delivered. I eventually found the GS support number and they say they have removed the charges. Still appears on my phone, but I assume that's because it is the weekend.
But this experience tainted my early impression of the Apple card. The sales pitch touted convenience, lack of fees, etc. But, in practice, I was disappointed. Why on earth wouldn't they let me pay the whole bill? And the amount of interest, though small, was high considering the charges were only a day or two old.
Maybe it's just teething problems, but it has made me suspicious. If it happens again, I'm out.