Surely! Montevideo, Punta Ballena, and Colonia Del Sacramento are beautiful destinations in Uruguay. Here are some travel tips for your journey:

Best Time to Visit:
The best time to visit Uruguay is from October to March when temperatures are warm and the days are long. December to February is the peak touristic season.

Route and Accessibility:
Montevideo, the capital, is well connected by air with flights from major cities worldwide. From Montevideo, you can take a bus or rent a car to reach Punta Ballena (about 1.5 hrs) and Colonia Del Sacramento (about 2.5 hrs). Ferries also connect Buenos Aires, Argentina to Colonia del Sacramento.

Altitude and Acclimatization:
These cities are at Sea level, so you don't need to worry about altitude sickness.

Accommodation and Booking:
There's a range of accommodations available from luxury hotels to budget hostels. Booking in advance during the peak season is recommended.

Clothing and Essentials:
Pack light, casual clothes but also include a few warmer options for cooler evenings. Sunscreen, hat, and swimwear are essential if you're planning to enjoy the beaches. Always carry a water bottle to stay hydrated.

Health and Safety:
Uruguay is considered one of the safest countries in Latin America. However, it's always important to follow common travel safety advice such as watching your belongings, avoiding secluded areas at night, etc.

Local Etiquette and Respect:
Uruguayans are known for their politeness and hospitality. A firm handshake is a common greeting. Respect local customs and traditions, and try to learn a few phrases in Spanish; it's greatly appreciated by locals.