I’m not familiar with Casitas but on some
fiberglass trailers people have removed the hinges on the door and backed the door away from the strike plate.
For minor crisis situations I have a door key hidden (wired) on the exterior of the trailer. I have a complete set of camper keys in the glovebox of my tow vehicle.
I know for sure that I have a proper screwdriver for the door hinge screws accessible in an exterior hatch and some tools in the tow vehicle. Once a year I take my lock out and give it an inspection, tighten any loose screws, and a
light internal lubrication with Tri-Flow. It only takes a few minutes. Those “paddle-slam” latches are somewhat prone to failure due to the abuse they take. I tend to close the door with two hands and not “slam” it. Be Prepared and Easy Does It
Iowa Dave