WiseGuys has the Chicago presale password: Everyone with this presale info will have the opportunity to buy presale tickets before they go on sale!!! presale code for Chicago tickets in San Antonio - TX (Majestic Theatre San Antonio) You might never have another opportunity to see Chicago’s show in San Antonio, TX.
Here are all the Chicago show details:

Chicago
Majestic Theatre San Antonio
San Antonio, TX
Tue, Apr 16, 2013 08:00 PM

Onsale to General Public
Start: Fri, 01/25/13 10:00 AM CST

PRIORITY PRESALE OFFER
Start: Wed, 01/23/13 10:00 AM CST
End: Thu, 01/24/13 10:00 PM CST

You can use this presale passwords and information to get tickets:

Here is a tip: When ordering performance tickets through Livenation, remember that Best Available is not always the best option… you may discover that “the best” is expensive or not what you expected. I suggest selecting a price level or a seating area to narrow your search.