I'm holding Maybank's Amex Plat Credit Card (without Maybank logo) as well as Maybank 2 Card Premier, according to my understanding, whatever supplementary card could get to enter local PPL free same as the Principal cardholer as PPL wouldn't know that is the Supplementary card.

The receptionist at PPL would request to check on the Boarding Pass to scan the barcode at times and if there is any charges, they will print a receipt and ask the cardholder to sign in order to claim for the charges, you may of course at that point of time decide to sign on the charges ta gain entry or not.

I assume those receipt that they ask me and my supplementary to sign are just zero charges for them to claim it back from the particular bank for each entry. 

Thanks for the information. I'll keep that in mind during our registration over the counter as we Havnt enter any PPL so far as I usually rush to the airport for my flight.

Will confirm above for real after March