Hello! It's great to hear you're planning to visit Kandy, Anuradhapura, and Mihintale. Here are some tips for your wonderful journey ahead.

Best Time to Visit:
The best time to visit these places in Sri Lanka is from December to March when the weather is dry and sunny. These months also offer cooler climates in the higher regions like Kandy.

Route and Accessibility:
To get to Kandy from Colombo, you can either take the A1 road (about 4 hours) or the train (about 6 hours). From Kandy, you can travel to Anuradhapura and Mihintale which are further north. All these places are well connected by public transport.

Accommodation and Booking:
These cities offer a range of accommodations suiting varied budgets- from luxury hotels to affordable guesthouses. It's advisable to book in advance, especially during the peak season. Websites like Booking.com and Agoda can provide a plethora of options.

Clothing and Essentials:
Pack a mix of light clothing for the heat and layers for the cooler nights. Don't forget a good pair of walking shoes for sightseeing. Also, pack sun protection- hats, sunglasses, sunblock- as well as essentials like a water bottle, personal medication, and travel insurance documents.

Health and Safety:
Sri Lanka is generally a safe country, but it's always good to be cautious of your belongings and surroundings. Drink bottled or properly treated water to avoid waterborne diseases. Keep insect repellent handy to protect against mosquitoes.

Local Etiquette and Respect:
When visiting religious sites in these places, remember to take off your shoes and wear respectful clothing that covers shoulders and knees. It's also appreciated if you are quiet and respectful, as many of these sites are also places of active worship.