The standard currency is LKR (Sri Lankan Rupee) but foreign currencies are accepted at many places.
Credit and Debit cards are accepted at many places while it is also possible to take cash out at any ATM with any foreign card.
Restaurants provide both vegetarian and non-vegetarian food.
Bottled water is always more plentiful than tap water. Hotels and restaurants will provide clean drinking water.
Average temperature is about 30 Celsius around the country except in the hill country where it can go to a minimum of 14 Celsius.
Tipping is not compulsory but really admired to leave a nice tip to appreciate good service. (An average tip is 10% - 20% at a restaurant)
Everyone is expected to wear respectfully when entering a temple. Shoulders must be covered and knees must be covered, hats and footwear must be removed, light-colored attire is most suitable, patched jeans are allowed and no photographs posing back to religious statues.
Flashing is prohibited inside some sites where it can harm the natural paintings and are mentioned at the entrance.
It is mentioned if photography is prohibited inside any of the sites.
Feeding the wildlife will not be allowed and is not allowed to get down inside a national park apart from the safe zones introduced by the wildlife department.
Be aware of scams and pickpockets although it is very rare.
Safe lockers will be provided at all the hotels.
Travelling on the foot boards in the trains cannot be accepted though you can capture an image safely.
Sri Lanka is a malaria-free country.
Hotels take safety options to avoid mosquitoes and insects but good to use a mosquito repellant when needed.