#17 Not Checking The Latest Visa Requirements
This one can be a rude shock if not followed. Always make sure you read up on the Visa requirements of the country you’re traveling to. This is all the more crucial if you’re covering several countries through your trip, as each country may have different Visa rules.
For example, if you have a single-entry Schengen visa, then you will not be allowed to enter Croatia, even though it technically falls under the EU. You will need a multiple or dual entry Schengen Visa for that, otherwise, you’ll be deported. See what we mean?