Exactly, they aren't adding all the "credit" system, for no reason. Do you think you'll be able to "haggle" with a local alien shopkeeper without waiting in line, like Olivanders?
The marketplace, shops, and cantina will be attractions in themselves. As will all the spaceship photo ops, walk around characters, and droids.
It's clear that Disney wants this to be their new "Potter", where guests stay and shop in heavily themed stores, and possibly buy blue milk.