Terry Hershey Park
Terry Hershey Park is a great last-minute wedding venue option in West Houston. The gazebo/pavilion at the park can be reserved, although it's not clear if this is possible.
With its scenic views, the park would be a lovely setting for a small wedding or reenactment, especially considering the intimate size of the gathering (only about 30 people). You can find the park's location on Google Maps.