Hello, it's exciting to hear about your upcoming trip to Trujillo, Barinas, and San Felipe. Here are some useful travel tips for you.

Best Time to Visit:
The best time to visit Trujillo and Barinas in Venezuela would be in the dry season from December to April, when there is least rainfall. San Felipe in Mexico is favorable all year round, though some tourists prefer cooler months between November and April.

Route and Accessibility:
For Trujillo, you can fly into Capitán FAP Carlos Martínez de Pinillos International Airport and then take a bus or taxi. To reach Barinas, the most common way is flying into Barinas Airport. From there, taxi services are available. As for San Felipe, Mexico, you can fly into two nearby airports - Mexicali or San Diego and then take a shuttle service.

Accommodation and Booking:
There are many hotels and guesthouses to choose from in Trujillo, Barinas and San Felipe. It is advisable to book accommodations in advance using reliable online platforms for the best prices and availability. Airbnb may be an option for you too.

Clothing and Essentials:
Given the tropical climate, light, breathable clothing is recommended. Don't forget your sunscreen, sunglasses, and a hat for sun protection. Given the year-round warm weather, swimwear is essential if you wish to enjoy the beaches in San Felipe.

Health and Safety:
Ensure you have travel insurance. Stay hydrated and protect yourself from the sun. Keep your valuables safe and beware of pickpockets in crowded places. Update yourself with any health advisories specific to these areas before your travel.

Local Etiquette and Respect:
Understanding local customs can enhance your travel experience. Generally, be aware that these places comprise various cultures, so respect for locals and their customs is essential. Spanish is widely spoken, a few phrases in Spanish could help to create good relations with the locals.