Our neighbors here in California are currently at their second home in Conroe....they decided just this afternoon to delay their trip home and "ride it out".
They figure they'd better be on scene if there's wind or water concerns.
The Greater Houston area is really large. Conroe is a good distance north of the City, so unless the storm turns and hit straight into Galveston area, or even to the east of Houston, they should be ok.
Just to give you an idea - I'm less than 30 miles from the Houston city limits, to the southwest, but TS Eduard hit east of Houston and we didn't even get a drop of rain or wind here.