Although (they are a little) wary , as (everywhere)in Italy .....

is always open to the integration of the individual forests , [I have no idea what this means]

is always available to get you into their world if you do so.

[THEY] Do not measure the affection they give, but [THEY] do not tolerate betrayal. 

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interesting, thanks!

opinion

We skip the history that has not only influenced differently had a different influence on northern and southern Italy , but also a region on the other.
We assume that Italy is gorgeous from head to toe and that both the North and the South have their merits and their faults .
To In the south (although this is not true for the whole South ) people are certainly hospitable, friendly, warm and affectionate . Although wary , a little ' as in Italy , is always open to the integration of the individual forests , is always available to get you into their world if you do so. Do not measure the affection they give, but do not tolerate betrayal.
In the North, people are more disciplined, more rational and have a more flexible (maybe you mean open-minded) mentality and mental patterns with a little ' more flexible and soft than in the South ( although this is not always a pro). They are more thrifty in all areas and this, in my opinion, often leads them to shut up like a clam in its their relationships with others.
The differences are many, but the most important one , according to me , is that southern Italians from the South/southern Italians smile even if everything goes wrong , while Northerners are unhappy even if all goes well (variation: are unhappy even if everything is going well.)

You write very well in English and this was interesting to read. But there are a few parts that are hard to understand. I have some questions about what I found confusing. Of course, you don't have to answer them; I am just curious, that's all.

Questions:

What do you mean by "soft" mental patterns? I didn't understand the meaning of "soft" in this context.

I also didn't understand the sentence: "Although wary , a little ' as in Italy , is always open to the integration of the individual forests , is always available to get you into their world if you do so."

There were two other instances where the meaning was unclear: "but also a region on the other" and "this it not always a pro."