as far as i know yes
Yes you can. The important thing for your DS Lite is the output from the charger not the input. All DS Lites (US or UK or anywhere) all want the same input charge so if you are in the UK a UK charger is exactly what you want to charge any DS regardless of where it came from. The difference is the input to the charger and what it has to do to convert that to what the DS wants so if you are in the UK then a UK charger is perfecto.
yes
if u had the right power addapter
yes
You can use the actual Wii in the US, but you can't use any games that are bought in the US with it, as it is classed as a different "region."
How dumb do u sound?!? Of course u can
yes
Yes u can! I'm really sure of that
i should think so because my UK ds plays us games
No
Yes, a digital camera bought in the US would work in the UK or any other country for that matter. You would have to buy an adapter to plug into the wall when you use your battery charger (if you use rechargable batteries) because the electrical voltage or frequency or whatever is not quite the same as ours in the US.
the DS is not region locked so you will be able to play any game from anywhere on your US DS