With Rita progged to make landfall at CAT 3 or above. I don't see anything that would change that.
With One Exception. A right turn into the Western Coast of Louisiana or East Coast of Tecas.

I'm not wishing Rita on anyone. Just basing that statement on the topography and the sparse population in those areas.

Topography is similar to the Coastal Plains and Wetlands east of New Orleans. With more trees.

That turn and a huge drop in windspeed are the only safe zones. And they probably won't occur.

If You Live in ANY of the Evacuation Zones in SE Texas. Please evacuate as soon as possible.
This, in my opinion includes the areas of Chambers County outside the Evacuation Zone.
Anahuac, High Island, Port Bolivar and points East to Include Cameron and probably Cameron Parish, Louisiana.
A storm surge of Katrina proportions would likely level everything inland to a Half mile. Katrina leveled places in Hancock County some 2 km inland. That's 1.2 miles.

Please leave as soon as you can.