For food-

Simply post all the food delivery folks in the region with menus and phone numbers. Lots of opportunities for food in most places. Set up a food ordering and delivery location on a corner with the signs.

Same with drink. Most companies will send it in with food. In urban locations post the name and address of the off license or store. Generally there is one in Baltimore in a block or so.

People exist on a daily basis in great numbers without hauling toilets around with them or renting them to take along. Why should festivals have such difficulty? Especially in urban areas.People find a way. Yeah bushes have worked for centuries anyway.

Yes small scale good start just expand it.

If you keep it informally announced anything is possible.

Conrad