Also, bring copies of prescriptions and the non-800 telephone number of your credit card company. Montevideo is the main gateway for flights to and from the country. Road and bus services across the borders with Brazil and Argentina are good. Unfortunately, there are no rail services linking these countries. A ferry and hydrofoil service runs between Colonia and Buenos Aires.
Domestic flights are inexpensive.
Pay the conductor on board. Long distance buses are comfortable. Book well in advance for weekends and during the summer holiday. There is usually a small charge for each piece of luggage. Usually there is an extra charge for each mile driven.