The participating teams from countries whose citizens are require to have visa have to handle such a visa before arrival in the Czech Republic and on their own responsibility. More information you can find here
List of the Czech Republic Embassy can be found here

By Air 
Official Airport of CZECH OPEN is an international airport Václav Havel Airport Prague-Ruzyně. Transfer from airport to hotel/stadium and back will be provided for all teams if requested, details in Team Manual. Team delegates should provide accurate arrivals and departures to ensure smooth transfer from airport to hotel and back.
Transfer time from airport (cca) 4 hours.

By Road 
You can reach Olomouc also by car. Please use the Google map bellow to plan your trip.