The store in Ueno is front of Keisei Ueno station, just on the other side of the street. Easy to find. It was talked about in immel's tutorial thread.
There should quite a lot of post offices in Tokyo, don't know if they all have the visa draw possibility. Just look for that red T with a line above it. I had a paper map I bought here in a big store, and it had them indicated. I can give some locations of them if you want.
(only 13 hours until my plane leaves
)
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My Japan Blog (and about Ayu, Anime,Figures,...)
Japan 2007 Trip Travel Blog (May 4-18,Ayu Concert x2)
Japan 2008 Trip Travel Blog (March 23-April 08,Ayu,gazette,X-Japan Concert & Tokyo Anime Fair)
Japan 2009 Trip Travel Blog (April 26-May 13,Ayu & Perfume Concert & Dolls Party 21)
Tokyo 2009 (Dec 27-Jan 3, Ayu CDL Concert)
Japan 2010 (April 6-23, Ayu & Kuu Concert?)
January 28th 2010: The day everything changed for international Ayu fans. <3