Here's an idea: Virtually every RV park in the US now has 50 amp, 240 volt service to (at least SOME) of their sites. It might be a way to do a "fill up" for the cost of an overnight stay. An adapter shouldn't be too big a deal.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.