Its a neat unit the 1200, portability is good as are the builtin charger/inverter functionality It won't drive most AC units, cook tops or other heavy power needing appliances, (instant startup wattage plus time duration) for light picnic type set up its great. If you are going to boon dock you will most likely need a beefier process in storage capacity and solar panels etc etc.
If you could extend the battery bank with external Li battery, that would increase its versatility. Good luck on your endeavors.
Component prices for solar setups are generally getting more economical with time and increase in popularity. I was once thinking a single solar wall unit or something similar would be an awesome thing to put on the RV! 7Kw of power for 5 K ish, they were about 7.5K a few years ago. Similar products are even more competitively priced.
RUSTIC is good.
Kudos to those who make Local, State & Federal Parks & Campgrounds possible and to those picking up the slack by Providing Private Campgrounds.