On average, people dress modestly and it is expected from tourists to avoid shorts or clothes that are too revealing. Some offices work till 2 pm and others take a long lunch break. Traveller cheques are accepted in many exchange shops and credit cards can be used in limited places. You can wire money via banks and agencies like Western Union. Int'l Airport or Tel Aviv airport.
Tourists can rent a car in any city or use public transportation or take a taxi to get around.
Yellow plates are mostly used by Israelis and residents of Jerusalem. Public phones are widely available and there are Internet Cafe's in most major cities. PA's Ministry of Tourism's site - some info is outdated Tourism.