For 2018, I've decided to travel to the Scandinavian countries and revisited Amsterdam. I've been to Helsinki and Stockholm before but on business trip which limits me to explore these places.
Flight tickets KUL-HEL-AMS-KUL (Qatar Airways) were booked in June 2017. Whereas tickets HEL-ARL (SAS) and BGO-AMS (KLM) were booked in October 2017. All hotels were booked online using booking.com and the hotel site. Train tickets from Stockholm-Goteborg, Goteborg-Oslo and Oslo-Bergen were booked online in December 2017 and January 2018 respectively.
Again for this trip, booked portable wifi (Samurai) from Visondata.