Hello, how exciting that you're planning a trip to Canada! Toronto, Kingston, and Ottawa are vibrant cities with a lot to offer.

Best Time to Visit:
The best time to visit these Canadian cities is during the late spring or early fall, when the weather is pleasant, and tourist crowds are manageable. Specifically, May through June and September through October provide a great balance of nice weather and fewer tourists.

Route and Accessibility:
Reach Toronto via the Toronto Pearson International Airport. For intra-city travel, use the Toronto Transit Commission's subways, streetcars, and buses. From Toronto, you can get to Kingston by car or by bus in approximately 3 hours. From Kingston to Ottawa, it's roughly a 2-hour drive, and buses are also available.

Accommodation and Booking:
All these cities have a wide variety of accommodations ranging from luxury hotels to budget hostels. It is recommended to book your accommodation in advance, especially during peak tourist season. Online platforms like Booking.com, Airbnb, and Expedia are great places to find accommodation that suits your needs.

Clothing and Essentials:
Pack according to the season of your visit. If you're travelling during spring or fall, bring layers, including a light jacket or sweater for the cooler evenings. For summer, light clothes will do. Winter requires heavy winter gear, including thermal layers, a heavy coat, gloves, hats, and waterproof boots.

Health and Safety:
Canada is generally a safe country to travel in. However, do ensure you have travel insurance to cover against any unexpected illnesses or accidents. Always stay updated on the weather and adjust your plans accordingly.

Local Etiquette and Respect:
Canadians are known for their politeness, so don't hesitate to say please and thank you. Respect the local customs and etiquette, ensure you leave no trace when visiting natural sites, and tip appropriately in restaurants and cafes.