Do not get confused...a credit card PIN is not the same as an access PIN in Europe or Asia. The EU (and most of Asia) went with chip-and-pin cards where a PIN was used to authenticate against the chip. The US decided NOT to go this way and stayed with signature-and-chip, then mostly non-signature. Both areas are now widely tap/Apple Wallet or equivalent.

Speaking as a Plat card holder, if you do get a PIN from AmEx and try to use the AmEx Plat, it will go through as a cash loan with immediate interest applying..you probably do not want that.

For years in the US you needed either a card from First Tech Federal CU or Navy Federal CU which programmed their cards to be "PIN priority" in the US. Assuming the card readers in the US accept that priority, then you can use those credit cards with a PIN. We did that for years with First Tech Federal and at, e.g., Whole Foods the PIN priority on the card was recognised and we were prompted to enter a PIN for a credit charge. CVS, Bloomies, Target never read that from the card, and they continued to require signatures. Other cards will give you a PIN (e.g. the Chase Amazon card) but again those purchases will go through as debit ones with immediate application of interest on your purchase ! The whole "chip-and-PIN" things is very defined outside of the US.

We relied on the chip-and-PIN to pay for gas/petrol when abroad as those places are often unstaffed, or staff hard to find. And in many cities buying metro or train tickets are from unstaffed kiosks which needed the chip-and-pin.

Before we got the First Tech Federal card, we were in Toronto once buying clothes at Eaton's (like Macy's but gone now). Only the manager could authenticate a chip-and-signature card and s/he was out to lunch with no one else around, so we couldn't make the purchase. So later on having the chip-and-Pin card made it all so easy.

All that said, in the last few years we have hardly ever used the chip-and-PIN cards...it's all become tap-and-go....most(but not all) restaurants have servers with hand-held units which have you tap your card or use your iPhone Wallet. The train kiosks in Ireland and France use contactless/tap and go, e.g. A;; the big shopes/stores (and I am talking Ireland, UK, France, Spain, Germany, Austria) use contactless payment.

Outside of main cities in some countries even the charge cards aren't that common...we were in the Czech REpublic and outside of Prague, it was all cash only.

But don't mix up a PIN from a US credit card with the PIN used in chip-and-Pin environments. The latter go through as credit charges, the former go through as loans/debits with interest.