Cafe Mexico is easy to find.
Take the Spring Valley exit off of I-45 (I-75) on the north side of town (an exit or two past LBJ...I-635), and it's on the service road just north of Spring Valley.
If that exit's blocked by construction, go on up to the next one, make a u-turn back to Spring Valley, then go back north on the service road.
Can't miss it.
BTW, anyone bringing FRS radios?