I know it’s Louisiana but

It's no big deal either way. Not a lot of parking it that area, so figure out what you're gonna do before you get there.
But, Lacombe isn't a bad place

 

If you’re going to Smuckers, all they have is a small fuel stop. They usually make you drop your Trailer and BT out, Fuel Stop has no parking. Usually can get away with hanging around a while. Parking at the TA in Slidell is usually full. 59 north of 12 exit 5A is 20 miles away. Probably be the best bet for finding a spot if needed. Just watch out for the Honey Island Swamp Monster.

 

There's the place on 59 north, Sunny Time. Nice place, but get there early.
Also, B&J in Robert. $10 to park, but you can probably find a spot

 

And if you can BT out, there's a 7-11 or something just down the road on the right.

 

Local Big Foot type Legend. Since you’ll be BT, I would just go to the TA in Slidell. Park in the 4 wheeler Lot if you have to. They shouldn’t bother you.

 

Truckers path showed this.

 

Didn’t they just have a tornado rip through Chalmette last week?

 

The TA or 2 exits south (wb 1-10) at Old Spanish Trail exit theres 2 small fuel stops. You don’t want to go to any of the ones across the Lake.