Originally Posted by whem2fish
Lone Star RV on 35 just south of downtown
My, how times have changed. What used to be at the edge of the universe is now considered "just south of downtown."
To the OP--you're not going to get anywhere near the UT campus, even boondocking. Austin is very keen on infill and increasing density. The ideal would be Pecan Grove, but (1) it's pretty much impossible to get a site even when it's not a football weekend, and (2) I wouldn't even think about trying to get my 40-foot moho in there, although people claim to have done it.
Oak Forest is okay, but the neighborhood, and the drive to downtown/UT, is very dispiriting.
Although you don't have a toad--do you know how you'll be getting around? Last I heard, Uber and Lyft still aren't there--they tried a power play against the city, threatening to leave if they didn't get their way, and they lost, and left. You'll need to check into alternative ride share options if that's what you were planning on, although if you're okay with staying at Lone Star, then you probably have all this sorted out.
You might also try Midtown RV Park--it's not great but it does exist; it has a trailer park vibe to me.
One that doesn't get much mention is Royal Palms RV Park. I've never laid eyes on it, but it looks to be way in the back of a mobile home dealer--I've driven by that place tons of times and never knew there was an RV park back there. It's not somewhere I'd seek out but if you're desperate, it might work. But again, getting around without a toad will be challenging.
Out on Lake Travis is La Hacienda. It's very nice, but will definitely be problematic without a toad.
McKinney Falls State Park has RV sites (E/W only), but it's usually booked up on weekends. And it's out kind of in the middle of nowhere. You have to pay a daily per-person entrance fee in addition to the camping fee. The sites are way in from the gate, and it would be a very long trek on foot to get to the gate if you're using ride sharing.
Walmarts in Austin are a no-go. A couple are in unsafe locations (and I'm not a scaredy-cat on that sort of thing), and one is in a location that was heavily fought by the neighborhood, it made a lot of concessions to placate them, and its lot is most definitely not big-rig friendly.
Maybe out in Round Rock would be okay, but you're a long way from campus, and of course Walmart is really only for one night anyway.
Sorry, but a football weekend in Austin is probably a pretty big ask.