Not all places allow photographs, especially museums which often retain sole rights to photograph their works. Flash photography is especially frowned upon.
Italy may be tourist friendly and known for fashion, but it is generally considered rude to walk around town in bikinis, beach attire and skimpy outfits.
Don't expect to find a drycleaner in the Tuscan countryside as laundry facilities are hard to find outside large cities.
Returning or exchanging an item, even if it is flawed, is uncommon in Italian stores.