Yeah, the restaurant carry thing is a problem resulting from poor law-making. As I understand it, RS 14:95 was an older law passed before CCW was legal. When adding the CC statutes, the older law was not changed, but additional language was added in the list of prohibited places.
The new language clearly applies only to establishments possessing a Class A liquor license. If you do some digging, you will find that one of the requirements of a Class A liquor license is that children under 18 are not permitted on the premises. This provides a quick litmus test for us - if you can take your kids inside, you can carry and not violate the prohibited places list.
This would make things very simple if not for the additional RS 14:95, which prohibits any carry in any business that sells any alcohol. This is a legal problem that unfortunately will have to have a test case or be repealed by the legislature. Personally, I think a good lawyer could make the case that these conflicting laws are unreasonable and set up a trap for otherwise legal citizens.
Otherwise the carry laws are fairly straightforward. If you're down here for Mardi Gras, be aware that you cannot carry at any parade. You also cannot carry into someone else's house without their consent or into any business that has a gun-buster sign posted. Luckily, those seem to be rare.
Handgunlaw.us maintains a decent reference page for traveling.