Have you ever used cast iron? Any tips on using it?

We have a propane stove/oven in the RV. If the weather is hot, we use the grill outside or even a fire to cook because the propane oven really puts off a lot of heat into the RV. Better to cook outside. We've been doing a lot of typical grill stuff and camping cooking in foil packets but I've been considering investing in cast iron cookware to really be able to cook the same types of food outside as I could cook inside. When we were kids, mom used to even make eggs and bacon on the grill with a cast iron skillet. They're heavy but I think I would only need a good skillet and a nice dutch oven style pot. I could even get rid of some of the lighter cookware.