I have to tell you that you have a lot fewer rights, protections and privileges in labor law than you might think before something like this happens to you. And your state is not one that has a lot of extras tacked on to protect workers in any way beyond the bare federal guildelines of EEOC and OSHA. If you wanted to press charges against someone who grabbed you or assaulted you, that would be up to you, as in calling the police to file a complaint (which would only be effective for the most part if it happened very shortly after the incident) and your employer would be perfectly okay to fire you if you had elected to do so. Georgia is an "at will" state, they can fire you "at will." An EEOC complaint would result in a long drawn out decision from them on whether or not you had actually a "right to sue" for EEOC reasons. And then you might be able to sue the restaurant for having subjected you to sexual harassment. (Though in that case, if you were fired or quit immediately after that happened, you'd probably also have a pretty good chance of being eligible for about six months of a very meager amount of unemployment insurance benefits while you were looking for another job.)
And it appears, as far as EEOC issues are concerned, that you complained of the sexual harassment to your employer, and they responded by attempting to settle the matter. That was just what they should have done. Not being able to take others in to the meeting with you (like your furious and glowering husband who might've gone off and shown his temper) seems pretty reasonable to me. And the employer attempted to solve the issue/deal with the situation by banning the client from the restaurant for 60 days. That was an appropriate response on their part, it seems to me. What would you prefer?
It is entirely possible that your attacker/harasser may not live 60 more days, or that he will find another place to go and do his drinking during this time, as he is a free agent also. What you anticipate happening hasn't happened yet, so you can't really complain about it. You did the right thing, and it sounds pretty much to me like it was handled appropriately.
But I think you should think very hard at this point how you think you have been disrespected and what the owner could do that would make things right. They listened to you, they tried to fix what had happened. You could consult with an attorney, see if there's anything they think you could sue the restaurant over, but even if there were some sort of case (which I do not see anywhere in this) it sounds as though you would be trying to destroy something pretty positive, this job for you and your husband which has had significant success.