Pre-cooked for 75 to 150 lunch? Maybe some early eaters too.

[waywardtravel]

Hello all, I'm new to this and looking for recommendations.
I have a tour operator who loves my BBQ and Jerky. He is asking if I can supply pre-packaged or pre-made foods and send a server with food for his customers. They go remote jungle basically so cooking is not an option. Warming maybe but I will need to figure out the heat source.
Possibly a small propane steamer?

Any recommendations on foods that hold very well for this kind of scenario.

I don't need to come up with too much variety due to the remote location. It obviously needs to be good.

The customers will be from all over the world daily. In Panama but very few locals.

I'm leaning to Pulled pork fajitas, breakfast burritos, ?