I have seen some SDM's which don't let you buy bus tickets , lottery tckets and GC ( including SDM GC ) with your credit card. They ask for cash or debit.
Not sure if its their official HO policy to do that or if its just the stores making up their own rules.
Usually if you are buying other products like groceries etc and the GC , they let you buy it with your CC.
But if you are buying just the GC with your CC they sometimes give you a hard time.
Plus isn't there some kind of transaction fee or administrative charge for using the pre paid vanilla mastercard the first time you use it anywhere ? ..so it might not be worth it :(

