[WingsToDiscovery]

You shouldn't have a problem with shampoo and such as long as it's in your luggage and not your carry-on, like all other planes. Specifications for outlets/wifi etc. depends on the airport/plane.

As for transportation, as far as I know there aren't any bus passes. You can get a train pass good for all Tokyo trains and subways for one business day for about 1600 yen (around 20 dollars), but if you're soaking in the sights and sounds, you probably won't be bouncing between stations enough in one day to warrant that price, especially since most popular districts are within walking distance and are quite easy to get to even for newcomers/tourists because of all of the English signs if you ever get bored with one area. Cabs can cost around 800 yen (around 10 dollars) just to sit in, so your best bet will be the trains.
To make your life easier, you can get a Suica card (a hard plastic train pass card) that doesn't offer any kind of discount, but can be preloaded at any stop. That way, you can just place money on it and pass through all of the train stations without having to worry about buying tickets/transfer tickets all the time.