Where do the rich live and hang out in Tokyo?

And no, I am not a gold digger ... just a lowly writer doing some research and too poor to go to Tokyo right now. Also in the earnest gathering of information I came across a few items.
1) In the here today and gone tomorrow culture of Tokyo does the floating bar still exist?
2) Where in Tokyo would a start up PR company find affordable office space?
3) Where do the Japanese go to ski? Horse back riding? And
Sail?
4) Where in Tokyo could a person play a friendly game of Hockey?
5) Are there avocados in Japan?
6) What is the Hanakotoba flower arrangement for
(a)"I accept" . (b)"Forgive me''. and (c)"You're beautiful".

I have many more questions, but I'll start with these. I appreciate all your answers. Thanks in Advance.

I suppose rich people people hang out in Ginza and Akasaka. For sailing in the Kanto area folks go to Kamakura. There is a very nice national dingy training centre in Onnahama, Fukushima that I have been to for the Laser radial nationals. There are riding clubs here and there on the outskirts of Tokyo. The national equestrian centre is in Karuizawa. These guys below seem to take their hockey pretty seriously, but you can play beer league or just shinny at the Tokyo area rinks as well.

http://www.tokyocanadians.com/News/news....

Yes, the floating bar does exist. The Jicco Floating Bar located at Tokyo Bay sells floating passes for about 2500 yen.
The Executive Centre looks like a legit place to start/house a business.
Check out the third site below for ski resorts. At the fourth site, is a list of places to go horseback riding.
Not sure where one could play hockey.
Yes, they do have avocados.
Hope this helps!