Absolutely! Here are some travel tips for your visit to San Antonio, Dallas, and Amarillo:

Best Time to Visit:
The best times to visit these cities are in the spring (March to May) and fall (September to November) when the weather is pleasant and milder. However, if you're a fan of the Texas heat and want to visit some of the water parks, summer can be a fun time too.

Route and Accessibility:
All three cities are well-connected by roads and interstate highways. If you are planning to drive, it's about a five-hour drive from Dallas to San Antonio, and another five to Amarillo. All cities are also served by airports and bus services.

Altitude and Acclimatization:
These cities are located at low altitudes, so acclimatization is generally not an issue. However, it would be wise to stay hydrated, especially in the summer months.

Accommodation and Booking:
All three cities have enough options for accommodation, including hotels, motels, and B&Bs. Also, consider booking ahead, especially for weekends and public holidays.

Clothing and Essentials:
Pack lightweight clothing for summers and some layering options for cooler evenings. Don't forget to pack your swimwear and sunscreen if you plan on visiting the water parks or beaches. Comfortable shoes are a must for sightseeing.

Health and Safety:
Be aware of your surroundings, especially in crowded areas. Keep your personal belongings closely. Tap water is generally safe to drink but carrying a bottle of water on hot days is advisable.

Local Etiquette and Respect:
Texans are known for their hospitality and friendliness. Proper manners and respect for others go a long way. Tipping is customary in restaurants and for services.

In San Antonio, don't miss the River Walk and the Alamo. Dallas is known for its art scene, so do check out the Dallas Museum of Art, and Amarillo boasts the famous Cadillac Ranch, where you can leave your graffiti mark on classic cars buried in a field. Enjoy your trip!