No it will not poison you to drink a liquid that is directly cooled by dry ice. At normal pressures there may be some gaseous CO2 dissolved in the liquid giving it a mild carbonation. However, dry ice can be dangerous to bare skin, mouth, or GI tissue if someone swallows a medium to large pieces of dry ice.
London has become the first city to have hosted three Games as of the 2012 Summer Olympics. The United States has hosted a total of eight Olympic Games, more than any other country, followed by France with five editions. Canada, Germany, Italy, Japan, and the United Kingdom have each hosted three Games.