re: Anyone ever been to Mumbai?

I've been. I loved it. +1 on the shoes and socks. Bring plenty of socks. You can easily get swamp foot if you don't have water-proof shoes. pack an extra pair of socks with you wherever you go.

just go with an open mind and understanding that there are a ton of people and the culture is completely different than what you're used to...you'll enjoy it if you do that.