The wage in the Hospitality Industry in the USA rely on Tipping to boost their wage, where in Australia the wage is at a greater level, therefore we should not have to TIP in Australia but if the individual wants to TIP for good service it should be voluntary.
This is only an advertising gimmick, have told the public nothing, all it has told you is go and look at all the items to see which ones are reduce and while you are there purchase something you might not need.
I know how he felt when he went for a shower, it seems like every hotel/resort likes to have fun with you, I bet there is a camera somewhere there recording the poor sap trying how everything works.