Welcome to San Marcos.
I'd still stay away from Sagewood (problems again this weekend) or Haynes St.
There are tons of cool places to see and hang out. I've always liked Alvin Ord's, checking out the bikinis and the frisbee guy at Sewell Park, or relaxing at City Park and 5-mile Dam, Sundance Records, driving out Devil' Backbone and/or into Wimberley, getting a beer at Devil's Backbone Tavern (sorry, not Riley's) bike (bicycle) riding out behind the outlet mall (Pedal Power has a group to ride with) or down whatever that road is by Freeman Ranch (Fulton ranch Road? Head out RR12 and turn right at the Jesus rock, a couple of miles outside of town), eating barbecue in Lockhart (Woody's in San Marcos is just OK), or buying some kickass steaks at Granzin's and firing up the grill, tubing on the San Marcos River, as well as in New Braunfels and Canyon Lake, Mana's Mexican Restaurant, Garcia's too, breakfast tacos on Aquarena Springs at Lolita's or on Holland St at the place I drive by every day and never remember the name, even though I live within spitting distance, because I am just too loyal to Lolita's, Gruene Hall and the rest of downtown Gruene, Cheatham Street Warehouse, The Root Cellar, mountain biking down all the stairs (and then back up) on campus, the historic district, tennis courts on Sessom, walking/shopping at the outlet mall on a weekday, the observation tower at Wonder World, sex in the study rooms at the library, Tantra Coffeehouse, Wimberley rodeo, movies in the park, concerts in the park, summerfest/4th of July fireworks in the park, Olympic kayak qualifiers (just missed), Texas Natural Swing Festival, Texas Water Safari (260 mile canoe/kayak race), I just went to an AWESOME play (complete works of Shakespeare, abridged) at Texas Red's, but that's over now - I hear there are other shows in the works, though...
Hell, I don't think I could list it all.