Surely there are some westerners whose behaviour is unacceptable, but from some bad example you shouldn't accuse all of us being so rude. Also I saw many-many-many bad examples from the third world countries, so there are good and bad people from everywhere.
But to answer for the quaestion of dks, from this money you will spend the half on accomodation, and the rest you will have for food and entertainment, so you will not have much to save. But if your wife will work too, than it's better, you can live well enough. Just make sure about transportation, because if you have to pay for it, that will cost a lot for you.

We all live under the same sky but we do not all have the same horizon.