For some countries, you sometimes need a visa. How long you can remain in the country depends on the type of visa you receive. The type of visa can be dependent on various things, such as the type of trip (tourist or business) and type of passport. It is also important to understand that the rules regarding visas can be changed quickly and it is not certain that the Swedish authorities receive the information at once.
It is therefore important to plan the trip in advance and find out what and if you require a visa to where you are traveling. Sometimes it is even necessary to have a visa for the countries where you are transiting. Hence, it is important to have control over the whole trip.
Welcome to your travel agent!