I want to start a business where I charge people to use my living room, wifi.
They can leave a tip for any of my coffee that they drink.
Is there a legality issue with this?
Breach of zoning regulations: running a business in a residential area
Breach of internet providers terms of service: you need a business subscription
Breach of fire code: is your "business" rated for an occupancy of 20?
Breach of health code: Preparing food or beverages for sale without the proper certifications and a commercial kitchen
Other things to keep in mind: ADA accessibility, taxes, liability if someone is injured