Also, I'd like to redeem for United miles to someone else's United account. Would there be any issue to do so? Does the name on my E-Miles account need to match with the name on the other person's United account? I know I could easily change the name in my E-Miles account settings, but I'm just wondering if this is really necessary and if I need to make any other changes like to the zip code.

There is also a discrepancy between how long it would take for miles to post to United on their redeem page (5 days) vs what's stated in the details of the United redemption option ("Please allow six to eight weeks after completed qualifying activity for bonus miles to be posted to your MileagePlus account."). Does anyone know if it's really 5 days or 6-8 weeks to post?