This rule or law is mute. ADA wrote the 504, but has no way to enforce it. I know in my state you are not allowed to bring any type of food to an inspected business.
It's just another example of someone twisting the law to accommodate themselves.
Hey, it's your place, and your rules. It is legal and commonly done for owners to post "no food or drink inside".
When and if some TV lawyer decides to come down on a business, the usual response would be, undue burden to make the correction.. The problem is, they did not think far enough to define undue burden.
So it's mute. The rule itself is not bad but refers to businesses receiving Govt funding.
I am truly a supporter of the ADA when they have an equitable solution.
I would rather see a law that require the restaurants to keep an allergy free item. This might increase business as much as the other way my decrease revenue.
I readd this a while back when reading about a trend to bring your own food to restaurants. I've also read lately that the trend is growing.
Never did explain how the owner would make money.