-Dutch Oven purists will probably frown upon the use of foil to line the pan. I say easier is better while camping. You may make this dessert without lining the pan, but be prepared to clean up a sticky mess off the bottom of the pan :)
-I suggest preparing this dish before dinner. After the cobbler is done cooking, remove from heat. It will keep warm for at least a couple of hours with the lid on.
-When we first started Dutch oven cooking, we (I use the term "we" loosely) thought if 10 coals on the bottom were good, 20 were better. Not so. If the recipe calls for 10 on the bottom and 16 on the top, follow the recipe suggestion. Or you'll have blackened cobbler.
-When baking in a Dutch oven, more of the coals should be on top (or on the lid) of the oven to prevent burning the bottom of the dish.
-Briquettes vs other brands- Kash only likes to use Kingsford. I agree. We have experimented with other brands, Kingsford is best.