Replying to Summer vacation alaska or canada

Pretty dumb question...

But my family wants to spend 1 week on the other side of the ocean with my bro nd I. We have been often in the us so we dont have to see the usual stuff. But first we wanted to go to alaska do some activities but mostly drive through the state.

Then we came with the idea of going fly fishing somewhere... heard stuff about alaska/canada and idaho as well.

Thats kinda the situation my parents always arange those things at the last moment.

But the thing is I really wanna (nd must) go to whistler!
Nd I BC is such an amazing state, so could guys plz tell me some really nice things to see nd do in BC.