Sure! These are vibrant and busy cities of the world. Here are some travel tips to help you make the most of your trip:

Best Time to Visit:
Las Vegas: March to May and from September to November when the weather is warm but not too hot.
Mexico City: The dry season from November to April is typically the best time to visit.
Miami: The best time is usually during the Spring months, from March to May.

Route and Accessibility:
All three cities have international airports and are well-connected by flights from around the world. They also have good public transportation systems.

Altitude and Acclimatization:
Mexico City is at a high altitude, so it's important to rest and stay hydrated to avoid altitude sickness. Las Vegas and Miami are at a lower altitude.

Accommodation and Booking:
It's wise to book accommodations in advance. There is a range of options to suit various budgets in all three cities.

Clothing and Essentials:
Pack according to the season of your visit. Bring sun protection for Las Vegas and Miami. For Mexico City, pack warm clothing as temperatures can drop during the night.

Health and Safety:
Drink bottled water, especially in Mexico City. Take care of your belongings and beware of pickpockets in crowded tourist areas.

Local Etiquette and Respect:
Mexicans and Americans appreciate polite manners. Respect local customs and traditions. Spanish is spoken in Miami and Mexico City, so learning few basic phrases can be beneficial.

Remember, all three cities have a vibrant nightlife but do not compromise your safety. Have fun but also stay safe.