Here are some helpful links for planning your weekend.
... to
Livermore wine country!
... to
weather patterns in Livermore, CA.
... to
local regional park.

For out-of-town guests...
Southwest flights into Oakland are definitely going to be the closest and probably going to the cheapest, but here are some cheap flight sites I've found helpful in the past anyway...
http://www.kayak.com/http://www.expedia.com/http://www.cheapflights.com/http://www.orbitz.com/REMEMBER:
The best time to search for AND BUY YOUR TICKET ONLINE is 10am-6pm EST on a Tuesday. Another way to cut costs is to find the flights less traveled (ex.an afternoon during the week)...
Livermore is only about 25 mi./30 minute drive from the
Oakland International Airport (OAK).
A block of rooms at the
Hampton has been negotiated at $79 per room (single or double) and our group code for booking online or over the phone (925-606-6400) or 1800 HAMPTON (426-7866) is WDM.
Directions from Oakland International Airport to Hampton:
South on Hwy 880.
Take 238 East to I-580 East.
Exit Airway Blvd in Livermore.
Make a Left on Airway Blvd, Make a Right on Collier Canyon, Make a Right on first Signal at Constitution Dr.
We Are On The Right Hand Side.
SO, as you all know,
Billy and I don't have a car, so we've included options for all you energy conscious folks:
It's plausible that everyone who stays at the Hampton goes completely carless for the weekend.
There is a shuttle called Air BART from the Airport to the
BART (Bay Area Rapid Transit) AND, as long as we book at least ten rooms if you stay at the Hampton, a shuttle from the
Dublin/Pleasonton BART station to the Hampton Inn. As long as we book up the Hampton, too, we have arranged that our out-of-town guests will have transportation to and from the rehearsal dinner on Friday night (15 at a time mind you...)!
I hope this helps. Don't worry, there's much more to come (including a list of area attractions with links)!