I am having a lot of fun looking up stuff for you to do btw whilst in San Francisco especially because you said tech stuff and well offbeat activities which are aplenty in SF
Source: NateKharrl/Flickr
So first some science/tech/gadgety things to do for you include:
A visit to the California Academy of Sciences at Golden Gate Park is bound to blow your mind away. Check out the rainforest biodome in the photo above. The aquarium apparently is something else to watch. You gotta experience "Night Life" at the Steinhart Aquarium on Thursdays from 18:00-22:00. With an... read more
Source:David Eppstein/Wikipedia
Irvine, Chicago and New York huh? Sounds very cool. Will definitely come up with ideas for you to find your groove in these places. All three are quite different cities so will try and satisfy all your requirements.
IRVINE
Experience the Dinner Detective Murder Mystery Dinner Show - Don't expect too much from the food and I think you might come home satisfied with the experience of doing something unusual. Located inside the Atrium Hotel, this interactive murder mystery dinner show provides the ultimate entertainment experience. Their website... read more
Hiya, thanks for coming back again to mygola. I love the fact that you are using us so much
I had to go through a lot of forums to figure out how it could work best for you. One of the main things is AT&T is the exclusive carrier for the iPhone in the United States. Luckily they do offer a variety of prepaid options but is important that you do choose the right one or get stuck with horrible roaming charges!
This link from Answerbag explains the prepaid options available for the IPhone which includes Pay As You Go, data plans and the like.
I also found you another link which... read more
Oh wow! The City of Angels....you are going to have a whole lot of fun on this trip I can see
Source:JavierPsilocybin/Flickr
There is a whole bunch of stuff that you can do at LA so am going to recommend offbeat but also some popular stuff which would be a pity to miss!
Things To Do
Check out Amoeba Music, the world's largest independent record store and a Hollywood landmark. Check here for reviews on Tripadvisor
Take a yoga class at Golden Bridge Yoga (just off Sunset and Vine)
MUST MUST MUST visit the Getty Center - Sweeping architecture by Richard Meier.... read more