To compare Greek and Latin is just like saying Malaysian language are close to Brazilian.Totally out of time and space.
The closest language to Greek are Armenian,Russian,Aglosaxon and Germanic.
The German gramatic system is closest to Greek than anybody.
Russian language is pretty close in Greek and the Cyrillic alphabet as well.
Aglosaxon off course cause most English words are of Greek origin.
And finally Armenian.
But i would consider Greek as a UNIQUE language.
To compare Albanian and Greek again is like saying Chinese language is Ainu.
Again wrong and abnormal.
Now about Greek culture.
Greek culture is closest to Slavic,Iranian and Lebanese culture.
Believe it or not is close to Chinese as well.
I mean the last i said from personal observation.
Greek culture is more like Asiatic culture not so ''European''.
Greeks on Athens speak the official Greek language.
In Epirus they speak a Slavogreek language the Vlach.
In Macedonia (the original one not the fake wannabe one)
they speak the Greek Macedonian a brunch of Greek language and Pontic Greek.
In Thrace,they speak Thracian.
In Thessaly they speak a language close to Vlach.
In Peloponnese they speak Peloponnese nothing to do with Albanians.
In Ionian sea they speak Eptanesian.
In Aegean sea it depends where you living.
In Crete,Cretan.
In Cyprus,Cypriot.
The easiest language according to Greeks is the German one.
The easiest accent the French.