Is the nightlife in Austin or Dallas a good place to visit right now with covid?

If you want a state that is wide open, go to Florida.   There are no occupancy restrictions or mask requirements in Florida bars/restaurants - unless the business decides to have self imposed restrictions.

Look, I know you think you're immortal, but it's young people like you who refuse to take this seriously who are now the biggest part of the new case statistics, and as long as there are thousands of new cases every day, the kids won't be able to go back to school, we won't be able to have concerts or theater performances- this is an extraordinarily selfish thing to do, unless you have all been fully vaccinated. The governor of Texas has ordered the state to open up, but cities and individual businesses still have the leeway to stay closed or to have mandates. You can try looking up places and see if their websites list what the requirements are. I'll be thinking of you as I sit at home with my children this summer because they can't go to playgrounds or pools. 

you could try calling the cdc there

I wouldn't go down there yet. 1, they're still recovering from getting raped by winter weather. 2, I am confident they are withholding numbers about new cases. Maybe they're not spiraling out of control like Michigan is, but I'm confident they have had at least one outbreak within the last month.