Some Handy directions for anyone who wants to get there without a car, borrowed from Aki @ GTR.co.uk
For those visiting Japan who want to go to Daikoku Futo, but do not have access to a ride or a car (or for that matter, for anyone who can't drive to Daikoku Futo for whatever reason), the following are instructions on how to get there by train/taxi:
From Tokyo/anywhere other than Yokohama - essentially you will want to first take a train to the nearest train station to Daikoku, from where you can then take a taxi (this is the most economical method). Alternatively, you could simply get to Yokohama station, a very large/major station, and take a cab from there, if you don't mind parting with a few more yen (maybe 3000 yen extra, not sure but at least??)
Or, if you happen to be in Yokohama already, and don't want to get on a train again (or especially, if you are at the tourist spots of Yokohama Chinatown or Yamashita Park - in which case it makes no sense to get on the train, you're already really close to Daikoku!), skip down to the Taxi section below:
Several train companies will take you to Yokohama station(横浜駅）. JR East, Tokyu, Keihin Kyuko all go there. Note some train lines may be faster than others (ie JR Tokaido line.). At Yokohama station, transfer to the JR Keihin Tohoku line. From there, take this train and get off at the third stop after Yokohama station, Ishikawa-cho station (石川町駅）. This might be the easiest route if you begin your journey on JR (as the transfer is easy, and you only pay for one ticket).
Alternatively, if you feel a bit more adventurous, you can transfer at Yokohama station to the Minato-Mirai line, run by another transit company (if you came on JR, exit the JR gates, then purchase another ticket at the Minato-Mirai line gates). Here, get on the Minato-Mirai train, and get off at the fifth and last stop, Motomachi\Chukagai station (元町・中華街駅）.
As you exit either station, head towards the taxi stands (タクシー）. Japanese taxis, you enter on the left side (watch the automatic door!).
Ask the taxi driver to take you to the
DAI KOKU FU TOH PEE AY. (P.A., or PARKING AREA).
Here's the characters - 大黒埠頭PA.
If you can print out this message - point to the following message:
If the first one doesn't understand, try the next cab.
To get BACK, it is highly advisable that you check and confirm with a local member on this board and arrange a ride back to the nearest station. The trains will generally stop running around 2330~2415 (the last runs of the night may not go all the way to Tokyo, btw), so plan accordingly (ie if you get on a train by 2300, you should be ok).
Who knows, if the locals are nice/in a good mood, they may even drive you back to Tokyo if they are headed that way!