回复：急问几个加拿大登陆的问题，先谢谢了：

1. 枫叶卡 is the most important thing. You don't need SIN or Health card, but I think they are good to have. I applied SIN card, but they forgot to let me sign something, so I have to apply it again. (damn !)

2. They just checked my passport and H-1 approval notice. Again, a letter is good to have incase anything goes wrong. I will definitely take it with me whenever I cross the border

3. Sorry, no experience.