Surely the way to go is solar panels, a battery bank and inverter to give 240 volt. Used to live on a boat in the UK and that's how it was done. But here with the amount of sun I would think it would be a really good option.
If you have a non o visa then not a problem. If you are travelling on a tourist visa or a visa exempt then you may be asked by the airline to show proof of onward travel.
says. They will send the visa as a pdf file which you need to show every time you enter the country for the validity of the visa. You will get a stamp in the passport for 60 days. Then you leave country and return, again showing the pdf and get stamped in for a further 60 days.