I have extensive experience with luxury restrooms and temporary sanitation. I prefer the trailers with 3 restrooms. Distinguishing features to look for: Mirrors/sinks, toilet paper holders, tinted skylights, A/C. You can go further with music, hot/cold water, and a urinal.
Never planned anything like this but I've played at plenty of outside weddings and events and I've seen plenty of bathrooms like you describe. They even have them at the (Houston) Rodeo in that walkway between NRG Stadium and the Astrodome. What little I know about this business is that it's a tough business to get your foot in the door. All businesses in the event planning industry (catering, planning, audio/visual, music, transportation, etc.) tend to stick together and refer eachother. You usually see the same companies working at all the big events. There's definitely a need for this - no one wants to have a bunch of port o potties at an upscale outside wedding - but it seems like the marketplace is already full (pun intended).
Where the **** are y'all going that you have these fancy Portopotties? I've been alive nearly 40 years and never seen one.
Yes, absolutely. I even permit the landscaping team to use them! The issue arose when when I caught one of the housekeepers using an interior bathroom.
You should angel invest in the OP's dream here -- do a CF brother a solid and become his first board member.
Man, I'm in the wrong social circles or something then. Perhaps @Trader_Jorge can show me around these fine toilets.