Are you Londoner? Or familiar with London?

Well I can answer a few of your questions, the best and cheapest way to get around is probably by either the tube (subway, underground) or by bus. Hotels in central London are usually quite pricey, but a really nice one is the Marriott on the thames which is fairly central and very comfortable. A good show is Billy Elliot, also Mamma Mia, or Oliver Twist. A really good Chinese restaurant is called The Golden Dragon and it is in china town. There is a chain restaurant called Pizza Express that is really delicous. It isn't like dominoes or round table, it is a proper sit down restaurant that is fairly cheap.There are a few attractions that shouldn't be missed: The London Eye (best on a sunny day), Big Ben, Tower of London, Tate Modern, Westminster Abbey, etc. Another fun thing to do could be a cruise down the river Thames. These run quite often and if you choose a good company can be quite informative. There are clubs all over the city, I am not sure of any names, but im sure the concierge at the hotel will be able to tell you that. Hope that it all goes well and they have a really great time!