Modifications?

Having some pretty good woodworking skills and the tools in my garage that at least says I might have some skills I have a few questions about doing modifications in the Pod.

1- I have noticed folks have, what appears to me, drilled into the shell of the pod. Does one drill into the shell like one does say into the walls of a house? I use a stud finder when I want to put screws or nails into the wall does it work the say way in the pod?

2- What are the hazards with drilling into the walls of a pod? I would think there electrical wiring inside the walls of the pod that one has to worry about.

3-Does drilling into the pod void any warranty work?

I am sure I might have more questions in this area but these have been on my mind since we bought Tricera-Pod. The first thing that came to mind when Sandee and I looked at the pod was changes I can make with regards to storage. Not sure I will get to these mods this year because of our travel plans, but I do know we will need to make some.