Entering the Vienna area look for a green sign showing a "i" - this means:
Or try to find a main railway-station ("Bahnhof"). If you are parking your car, take care if this is a short-time parking zone. You will have to fill out parking-tickets, which you can buy in a socalled "Trafik" (small shop for newspapers, cigarettes, postcards, etc.). For using austrian highways you have to buy a "Vignette" (using-permission).
Hotel and restaurant bills include a service charge, but hotel porters and cleaning staff usually expect something for their services. It is also customary to tip in restaurants and cafes. Round up smaller bills and add an extra 5% to 10% to larger ones: simply say the total amount you want them to take when handing over the money (it's not usual to leave the tip on the table). Taxi drivers will expect around 10% extra. Tour guides, cloakroom attendants and hairdressers are also usually tipped. Bargaining is not common except in flea markets, but you can try for a discount if paying for major purchases in cash instead by creditcards and it never hurts to haggle for a better hotel rate in the low season if you're staying for more than a few days.
Summer sightseeing and winter sports make Austria a year-round destination. The summer high season is in July and August, when crowds will be bigger and prices higher. It can be uncomfortably hot in the cities over summer and many famous institutions close down. Consequently, June and September are also busy months. During winter you'll find things less crowded in the cities and the hotel prices lower (except over Christmas and Easter). Winter sports are in full swing from mid-December to late March with the high season over Christmas, New Year and February. Alpine resorts are very quiet from late April to late May and in November. Spring in the Alps is in June, when the Alpine flowers start coating the mountains with colour.