ATMs are widely available, including in all major tourist centres and provincial capitals. Credit cards are accepted by many hotels and restaurants in larger cities.
Tipping is not traditionally expected, but in a country as poor as Cambodia, tips can go a long way.
Hotels Not expected outside the fanciest hotels, but 2000r to US$1 per bag plus a small tip for the cleaner will be a nice surprise.
Restaurants A few thousand riel at local restaurants will suffice; at fancier restaurants you might leave 10% on a small bill, 5% on a big bill.
Remorks & Moto Drivers Not expected for short trips, but leave a dollar or two for half-day or full-day rentals if the service was noteworthy.
Temples Most wats have contribution boxes – drop a few thousand riel in at the end of a visit, especially if a monk has shown you around.
Service Charges Many of the upmarket hotels levy a 10% service charge, but this doesn’t always make it to the staff.