On my last tt I installed blue rope lights to the gas line underneath the trailer via zip ties. I had the plug at the back of the trailer and would use an extension cord to plug them into the campground's electric box. Worked out pretty well. Provided a soft glow that was bright enough to keep you from tripping over anything that might be laying around at night, but not so bright that it blinded your neighbors.
As far as the bugs around your camper's door at night......we light one of these citronella buckets under the steps.