That's true. Whenever you swipe / paywave, look at the machine. If it's a Maybank terminal, most likely Amex will be accepted. Sometime, it's the salesperson who says that Amex is not accepted. But just ask the person to try.

But if it's some other banks' terminal, then Amex is unlikely to be offered unless the merchant insists on accepting Amex.

Yes, provided your AmEx also has the contactless feature, check your card if the contactless sign is there.

If you got the new card with the paywave logo, yes, it should be applicable. However, not all terminals would be able to 'wave' just yet. I always ask the cashier to use paywave first.

Starbucks, McDonalds, Village Grocer and a few others you can just paywave without problems.

Yes, get MBB to replace for you. It is free anyway.

Go to any of their card centres. I know Gardens and One Utama has one. You need to surrender your existing card, and come back a week later for the new card. Card number will be the same.

I noticed many Shell do not accept AMEX. Really feel sad. Used to utilize AMEX and bonus link.

Of course no.
None of the MBB credit cards gives cash back or rewards for topping up ShopeePay including Maybank Shopee card.

Should be the same as below