You can check the timetable of the shuttle service here:
Players will be able to take advantage of a shuttle service several times a day between GDYNIA - the Nadmorski Hotel/Arka Gdynia Tennis Club (Juliana Ejsmonda 2, 81-409 Gdynia) and GDAŃSK - the Gdańsk Tennis Academy (Kazimierza Górskiego 1, 80-320 Gdańsk).
The travel time between Gdynia and Gdańsk is between 20 and 40 minutes depending on traffic.
In Gdynia, the bus will stop in front of the main entrance to the Nadmorski Hotel, which is right next to the main entrance to the Arka Gdynia Tennis Club.
The tennis courts in GDAŃSK are located on a large site belonging to the Academy of Physical Education and Sport and do not have their own private parking, so in GDAŃSK, the bus will stop at the parking near the Hala Widowiskowo-Sportowa AWFiS (Kazimierza Górskiego 1, 80-320 Gdańsk). From there, it's about a 5-minute walk (400m) to the tennis courts. Directions to the courts are marked with signs. A map is below.

