回复：几个查不到的关于父母来参加毕业典礼的细节问题, 真头痛!

Just based my experience. I invited my parents when I got graduted,and my wife invited her parents when she got graduated also (after 9/11).
1. 需要填I-134表吗? 要w2表吗? 还是银行存款证明就够了?
bank statements were enough (3 months)
2. 学校有一封邀请信, 本人还要自己写一封吗? 是否需要中英文翻译?
We wrote a letter to parents in Chinese
3. 听说期限是进关是给的, 去领馆签证时不涉及这个问题, 又有人说必须自己在邀请信里讲明计划去多久, 而且给你的签证上会注明给你多久, 进关时只是按照注明的期限给, 是这样的吗?
We just said
1. graduation
2. tour the State, and
did not say anything about how long they would stay
4. 我心里想让父母可以至少住3个月, 但朋友说毕业典礼签证一般只好要求十来天, 要多了怕会被拒, 是这样的吗?
5. 我给的银行存款要多少钱合适呢?
it depents, we had 10K-20K
6. 问到我毕业后计划什么时候回国, 父母该怎么回答, 可以说等用完OPT, 一年后回国吗?
I do not think that VO will ask this question. You are adult. Your parents have no idea about what you are going to do.

only my 2 cents.