No. When the DelGrosso's expanded their water park, to include a lazy river, wave pool, and other attractions, they unfortunately eliminated the Texas hot dogs building as they needed the additional space. They did however add quite a few concessions buildings in the water park itself, including an authentic Philly Cheese Steak shop. The family went to philly and sampled many different cheese steaks, took samples back to Penn State's food science department, and "reverse engineered" the sandwich so that they are making pretty exact replicas of the authentic thing.
There are two Texas Hot Dogs locations still in Altoona, but unfortunately none at the park anymore.