Absolutely! Exploring Copenhagen, Stockholm, and Oslo is an exciting journey through Scandinavia's culture and breathtaking landscapes. Here are some travel tips:

Best Time to Visit:
The best time to visit these cities is between May and September when the weather is warm, and daylight hours are long. The weather is typically cool and pleasant, perfect for outdoor activities.

Route and Accessibility:
All these three cities are well connected by flights. You may also opt for a train or a bus journey. If you prefer waters, there are ferry services running between these cities.

Altitude and Acclimatization:
As these cities are at sea level, you won't need to worry about altitude sickness or acclimatization.

Accommodation and Booking:
Hotels can be quite pricey in Scandinavia. It is advisable to book accommodations well in advance to get reasonable deals. Consider staying in hostels or guesthouses, or renting apartments if traveling in a group.

Clothing and Essentials:
The weather in Scandinavia can be unpredictable, so pack layers. It's essential to have a good rain jacket regardless of when you visit. For day-to-day activities, pack comfortable walking shoes and light clothing for summer visits. For winter, thermal clothing, winter jackets, gloves, and scarves are must-haves.

Health and Safety:
Scandinavia is known for its high safety level, but like all travel, it's important to remain vigilant and be aware of your surroundings, particularly in crowded places.

Local Etiquette and Respect:
Scandinavians appreciate politeness and respect for personal space. If visiting churches or other religious or cultural sites, dress respectfully, and follow any local customs. Be conscious of the environment as Scandinavians are very environmentally conscious.

Additionally, English is widely spoken, but learning a few words in Danish, Swedish, and Norwegian can make your interaction with locals more rewarding.