Hello! That sounds like an exciting trip to the beautiful regions of the Philippines. Here are some travel tips.

Best Time to Visit:
The best time to visit areas like Tagaytay, Batangas, and Subic is during the dry season from November to April. The weather is pleasant and perfect for outdoor activities. Avoid the rainy season from June to October as it might disrupt your travel plans.

Route and Accessibility:
If you're starting from Manila, you can take a bus or van to reach Tagaytay in 2 hours. After Tagaytay, you can head to Batangas which is just a 1 to 1.5-hour drive away. From Batangas, Subic is approximately a 3 to 4-hour drive. Public buses and private cars are the main means of transport.

Accommodation and Booking:
There are several accommodations ranging from budget hotels to luxury resorts in all three places. It's suggested to book your accommodation in advance, especially during the peak tourist season. Agoda, Booking.com, and Airbnb are popular options for booking accommodations.

Clothing and Essentials:
Carry lightweight clothes made of breathable material due to the tropical climate. Don't forget to pack a hat, sunglasses, and a good sunscreen. Portable chargers, a good camera, and a travel guidebook will come in handy.

Health and Safety:
Stay hydrated and ensure to consume food from clean and reliable places. It's also advisable to have travel insurance. For safety, only hire government-registered vehicles and be aware of your belongings at all times.

Local Etiquette and Respect:
Filipinos are known for their hospitality. Respect the local traditions and customs. Basic courtesy and politeness go a long way.