Go to El Mercado to look around at the shops and galleries, and have dinner at Mi Tierra's. You can go to the King William district if you like looking at old houses; while there, you might check out the Blue Star art studios, and the Pioneer Mill (an old flour mill). They have a restored house that used to be the owner's residence, with a restaurant that serves a good brunch. The best mexican food in town is in a questionable neighborhood; The restaurant is called Los Barrios. Also, there's a great restaurant in the La Mansione del
Rio hotel called Los Canarios, fine continental cuisine right on the riverwalk. Pricey but good. The Buckhorn museum near the Alamo is fun to walk through, the whole family will enjoy it. Check winter hours at Sea World and Fiesta Texas if you like that sort of stuff. Across from the Rivercenter mall is the oldest deli in town, called Shilo's, where they brew their own root beer and serve German style deli food. If you want a day trip, you can drive up to Gruene Texas (near New Braunfels). There's a big outlet mall a little further up the road near San Marcos, if you enjoy shopping. Also, they opened a new ultra high end shopping center at La Cantera (neimann marcus and all that sorta stuff). Of course, there are many fine golf courses in town, and the weather is usually perfect that time of year for golf. Let me know if you want me to check into discounted green fees for you (just send me an email). I think the Tower of the Americas is closed for repairs. That would be too bad, as that's your source for a great view of the city. I know I read about a week ago that 4 construction workers spent about 10 hours stuck in the glass elevator that runs up the outside of the tower, that musta been fun. Course, if you like B-Ball, you can catch a spurs game. The Imax theatre is in the Rivercenter mall, they'll be showing special IMAX formatted films, 3-D films, and even 1 or 2 regular movies on Imax. They may have Polar Express in 3-D. There's a comedy club next door to it. Also, the Majestic Theatre is a great, restored theatre that shows broadway type shows and music concerts, you'll want to check their schedule.
You've picked the best time of year to visit. have fun, and bring lots of money please. Don't leave until you've spent it in the local economy.