TexasCHLforum.com

After managing a 51% establishment at the Renaissance Festival and suffering frequent checks by TABC, I can concur on this. If you don't post the sign TABC can fine you as well. We had a vacationing TABC officer giving everyone the hardest time because some signs weren't up. Our 51% sign was up, but the "duh" we check IDs and don't serve to anyone under 21 posters weren't. By the time they were done the front of the bar looked like a wall of theater ads.

You should be able to tell if it is a 51% establishment or not and its absence doesn't preclude you from following the restrictions on those establishments.