Goodbye! See you tomorrow.
ar-ri-ve-DER-ci — five syllables, stress on fourth. 'ci' = 'ch' sound.
When leaving a bar you visit regularly, to signal that you are a regular and will return.
'Arrivederci' (goodbye — formal) + 'ci vediamo domani' (see you tomorrow). The combination signals you are a regular and intend to return. In neighbourhood bars this exchange is automatic and valued.
A domani!
Until tomorrow!
Short and warm — the regular's goodbye
A presto!
See you soon!
Less specific than 'a domani' but equally warm
Buona giornata!
Have a good day!
Universal farewell — appropriate even if you are not a regular
The farewell at the Italian bar is as ritualistic as the arrival. 'A domani', 'a presto', 'stia bene' — these phrases are not formulaic politeness but genuine expressions of a social bond. The neighbourhood bar is the Italian equivalent of the British pub as a community anchor.