amberrose
To check into Providence's cultural and recreation venues see the Cities web port at
City of Providence - Mayor David N. Cicilline
As to your other questions, there are distinct cultural differences between RI and Southern California. And for that matter with all of New England.
History and tradition are two of the most important components of life here. People can be 'reserved' - gruff, aggressive, but mean well and most have good hearts. They do say what they 'feel', which outsiders may consider 'rude'. Good food is easy to be found in Providence, with great Italian easy to find. Seafood also is excellent. Rhode Island is part of Red Sox nation.
Since Providence was founded by Roger Williams in 1636, who left Boston for religious freedom, Providence is a very tolerant place. Providence and all of New England might best be called 'east coast secular'- which means religion plays less of a role in the residents lives then it does elsewhere.