There will be lots of Walmarts and McDonald's openings, as people buying said products is very common, and thus the companies can expand their operations rapidly.
Daily jobs, however, are anything from plumbers to electricians to guys who can do anything other people don't want to do.
I know people that do said jobs, and they get quite a nice salary from the demand for simple things.
But I'm not sure how long that will stay for, it all depends on supply and demand.
Wallmart products will be increasingly more expensive as the USD depreciates against the Yuan because most Wallmart products are imported, maybe it will change when producing in the States will become more interesting but there will still be a huge cost to support the huge public sector; politicians don't eat for free and don't drive their own cars
Walmart also has a huge amount of control over it's suppliers as they are such a large customer. If the US dollar were to weaken too much then Walmart could demand that their suppliers either cut costs, move someplace with a weaker currency or deal strictly in dollars.
Labor cost in the US is too expensive.
As for putting pressure on suppliers, Walmart can not push the cost down below production cost and labor cost.