I realize that many places do not accept American Express and that’s OK. I have an AMEX card from the company for company expenses, which I use quite regularly.
I booked a The Grove Hotel, Malahide, Ireland over the phone, and they took my credit card details, where I stated that it was an American Express card and they wrote on the paper “A/X” indicating this. When I checked into the hotel, they wrote the credit card number down again and looked at the card. This time they specifically wrote “AMEX” on the paper.
When I went to check out of the hotel, they tried to charge the credit card, and realized that they cannot take American Express cards. They can’t process them.
You’d think they would notice sooner? Heh.