If you have a passport from these countries below, you don't need a VISA to get into Uruguay

Just fill out the form for the tourist cards (it will be given in the plane, or ferry to you) and you will get a 90 day stamp in your passport .

But your passport is not allowed to expire in less than 6 month.

You can get another 90 days, when you go to Immigration, this costs at the moment about 18 USD.

When your 180 days expire you MUST leave the country, even if you are sick or dead - for 24 hours, then you can return for a new 90 days/90 days visa.

These are the countries that do not require a Visa to visit Uruguay:

ARGENTINA
ARMENIA
AUSTRALIA
AUSTRIA
BAHAMAS
BARBADOS
BELGIUM
BELIZE
BOLIVIA
BRAZIL
BULGARIA
CANADA
CHILE
COLOMBIA
COSTA RICA
CROATIA
CYPRUS
CZECH REPUBLIC
DENMARK
DOMINICAN REPUBLIC
ECUADOR
EL SALVADOR
FINLAND
FRANCE
GERMANY
GREAT BRITAIN
GREECE
GUATEMALA
HOLLAND
HONDURAS
HUNGARY
IRELAND
ICELAND
ISRAEL
ITALY
JAMAICA
JAPAN
LATVIA
LICHTENSTEIN
LITHUANIA
LUXEMBOURG
MALAYSIA
MALTA
MEXICO
MONACO
NEW ZEALAND
NICARAGUA
NORWAY
PANAMA
PARAGUAY
PERU
POLAND
PORTUGAL
ROMANIA
SEYCHELLES
SLOVAKIA
SLOVENIA
SPAIN
SOUTH AFRICA
SOUTH KOREA
SWEDEN
SWITZERLAND
TRINIDAD TOBAGO
TURKEY
UNITED STATES
VENEZUELA