Friday marked six months until the opening of the 2020 Olympic Games, and although Tokyo has received praise for its preparations to host the world's biggest sporting event, the road up until now has also had its fair share of potholes and speed bumps, and there's plenty still to be done.

With the government hoping to attract a record 40 million visitors to Japan this year, Tokyo is addressing every front, from building new venues and training 80,000 volunteers to strengthening cybersecurity and improving accessibility for people who don't speak Japanese and those with disabilities.

The host city has spent more than ¥1.37 trillion ($12.5 billion) on preparations for the 2020 Games, according to an annual budget plan released Friday by the Tokyo Metropolitan Government. The International Olympic Committee has spent more than ¥600 billion and the central government ¥150 billion.