Automatic visa revalidation at mexico

[ritas]

Hi
I am Indian citizen and currently on H1 and have an expired/invalid visa and a valid I-94 expiring in dec 2015.
Am planning on a cruise trip to Mexico. Length of stay in Mexico Ensenada is aprox 1 day. In this case,
1. Can I travel to Mexico and return back to US using the automatic revalidation process?
2. If so, what are the documents I need to take with me.
3. Also, do I need a visa to enter Mexico?

Your help is much appreciated.

Thanks