1. 我必须在I-94上所写的错误日期之前去办理吗?
-You had better go to fix it as soon as possible, at least before the I-94 expires.
2. 一定要带小孩吗?
-Yes.
3. 请问我去port办理行吗?因为DIS都好远。我找了一个port的list。
-Yes. You can go to any CBP port of entry to fix it.
http://www.cbp.gov/xp/cgov/toolbox/ports/