I am planning a trip to the states in May 2013. The cities I am keen on visiting are LA, Vegas, NYC and Orlando. I will be staying with some people based in LA who will be taking me to Vegas as well. Post which I covered the remain leg of the trip on my own. My interest lies in big city museums, art galleries, Broadway shows and entertainment, studio tours, the architecture etc. The Harry Potter theme park is a must do.
1. Are 3 weeks long enough to do these with enough time to do and see most things?
2. What sort of budget would you allow for the 3 weeks to do the above places?
3. Are there other must see places I should add to the itinerary?
Any advice and help is greatly appreciated