Tesla Motors Club

My family is planning on a vacation to Yellowstone in June 2016. Specifically around West Yellowstone and looking at rental houses in Emigrant, MT. My family will take two cars (of four) and we'll probably have some friends/relatives join us from elsewhere around the country.

The limitations for taking my car, as of right now, are:

1. Supercharging not enabled. Will be enabled prior. This was the plan from the beginning so I could have my car paid off earlier (just a couple more days!).
2. The Supercharger gap on I-90, which is expected to be completed by then.
3. No confirmed 240v charging at any of the places in Emigrant. Could possibly plug into a dryer outlet, but don't want to count on it. It sounds like we may be able to convince one owner to install a 14-50.
4. As far as I can tell, no EV charging inside the park near the attractions we plan to visit (primarily Old Faithful, of course).

If 1-3 are met, I can take my car. Otherwise, my car would likely be replaced by my brother's Explorer. The other car going on the trip would be my dad's C-Max Energi.

For inside the park, we're looking at over 200 miles total for a day from Emigrant and back. Too much for me to take the chance without any charging in the park, so I would need to ride in another car if we're unable to verify sufficient charging.

Has anyone taken their Model S or other BEV to Yellowstone? Any tips you could share or insight into the future charging infrastructure in the area?