Absolutely, planning a trip to Dubai, Abu Dhabi, and Sharjah could be quite an exciting journey. Here are some tips to guide your trip:

Best Time to Visit:
The ideal time to visit Dubai, Abu Dhabi, and Sharjah is between November and March when the temperatures are relatively cool and the weather is the most pleasant.

Route and Accessibility:
Dubai and Abu Dhabi international airports are the main gateways to these cities. They are well connected to all major airports around the world. Sharjah also has an international airport, but fewer airlines operate from here. The roads and public transportation in all three cities are well-developed, comprising buses, taxis, and metro.

Altitude and Acclimatization:
These cities are situated near sea level, so you don't need to worry about acclimatization.

Accommodation and Booking:
Dubai, Abu Dhabi, and Sharjah offer a wide range of accommodations to fit all budget levels. During peak season (November - March), it's advisable to book your accommodations in advance.

Clothing and Essentials:
The UAE has a conservative dress code, so try to dress modestly. Pack lightweight and breathable clothes to combat the heat. However, workplaces and malls are heavily air conditioned, so carrying a light shawl or jacket can be helpful. Additionally, sunscreen and sunglasses are essential.

Health and Safety:
Drink plenty of water to stay hydrated in the heat. It's also advisable to have travel insurance in case of unexpected situations. Keep emergency numbers with you and follow all safety guidelines while participating in any adventure activities.

Local Etiquette and Respect:
Respect local customs and traditions. Be mindful of local prayer timings and avoid eating or drinking in public places during Ramadan's fasting hours. Remember to ask permission before clicking pictures of locals.

Finally, the sale and consumption of alcohol is regulated and is mostly confined to licensed hotels, clubs, and restaurants. Enjoy your trip and have a fantastic time exploring the United Arab Emirates!