I'm leaving Katy Thursday mid-morning/noon with parents in tow in their car. Drop the car/truck/trailer off at the track upon arrival. Got a hotel (Best Western) in Westwego. Spend Friday in New Orleans taking in the sights and try to stay dry.

From the National forum / NOLA
On Thursday the gate will be closed until 3:00PM and then there is a Track Night in America (TNIA) event on track from 3:00PM to about 7:00PM. The gate should be open until 9:00PM.

If you come early (after 3:00PM but before 9:00PM), you will be able to park your trailer in paddock, but please do not interfere with the TNIA participants or the event itself. Store your trailers as far away from the fence, paddock and grid as possible. If you come before 3:00PM or after 9:00PM, you can park your trailer in front the gate (directly outside the park) where it will be in clear view of the 24 hour security guards.