I don't know about their success level, but here is the current official evac status:
The MANDATORY EVACUATION orders have been LIFTED for Aransas County, San Patricio County, City of Portland, Corpus Christi and Nueces County, (except Port Aransas, Mustang Island, Padre Island, and other low lying areas that are subject to flooding).
I was beginning to wonder if they were going to recall the evac in Corpus. Figured they were erring on the side of uncertainty.
I thought I had earlier that people were returning to CC and that they were reving the refineries back up. Guess it's true.