You haven't been misled because the terms sent to you are the ones you should expect to be the ones that prevail. That is the whole idea of sending the booklet to you, which should reflect exactly what you were offered and what you paid for. It should merely confirm what you know. You're not psychic, the weegie board isn't the primary communication route and no changes that they wish to make have been negotiated with you.
You have explained exactly why attemtping to change the terms and conditions during the year is "unfair".
UK1, I agree with what you have written - Amex do need to notify me of the T&C changes. The point I was trying to make was that as I was issued a card with old terms that are possibly going to be immediately varied to terms that existing customers have already been notified of. I would feel cheated (misled was probably the wrong word) that I had spent time reading the terms, applying for the various benefits that are on offer and then be told that there were changes. I will be waiting for the mail to see if a change of terms are sent.
I will feel slightly nervous paying for travel other than on an Amex in case I need to claim especially for car hire where there is a legal need to be insured.