The best time to visit Cambodia is during the dry season, which runs from November to April. During these months, you'll experience less rainfall and more comfortable temperatures, making it ideal for exploring temples, beaches, and other attractions. December to February are particularly popular due to cooler temperatures, but expect larger crowds at major tourist sites.

Most visitors to Cambodia require a visa. You can obtain a tourist visa on arrival at major entry points like Phnom Penh and Siem Reap airports, or at land border crossings. Alternatively, you can apply for an e-visa online before your trip. The standard tourist visa is valid for 30 days and can be extended once you're in the country if needed.

It is not recommended to drink tap water in Cambodia. Stick to bottled water, which is widely available and inexpensive. When dining out, ask for drinks without ice unless you're sure it's made from purified water. Many hotels and restaurants use water filtration systems, but it's always best to err on the side of caution to avoid potential stomach issues.

The top attractions in Cambodia include the ancient temples of Angkor Wat in Siem Reap, the Royal Palace and National Museum in Phnom Penh, and the beaches of Sihanoukville. Other notable sites include the Killing Fields and Tuol Sleng Genocide Museum for those interested in Cambodia's recent history, and the colonial architecture in Battambang. Nature lovers should consider visiting Tonle Sap Lake or the Cardamom Mountains.

Cambodia is generally an affordable destination for travelers. Budget travelers can get by on $20-$30 per day, including basic accommodation, local food, and transportation. Mid-range travelers should budget $50-$100 per day for better accommodations, restaurants, and activities. Luxury travelers can expect to spend $200 or more per day. Keep in mind that popular tourist areas like Siem Reap tend to be more expensive than other parts of the country.