I would not ask them much, but would do my own research to see if I in any way can increase my sales when accepting Bitcoin.
Comparing Bitcoin costs vs costs from traditional payment options, etc.
No chargebacks is a huge plus and also the low fee structure would convince me to use it.
these questions above are more likely the issues a merchant will be concerned with.
the whole decentralised, pseudonymous, cryptograpy buzz words have no practical use to a business. and should only come into the conversation far later if the merchant wants to know about the deeper stuff.
so stick to what truly benefits a business.
1. not having to pay monthly processing fee's to accept funds online
2. not having to do any 'bill payer only' delivery service, allowing more freedoms for the customers delivery destination
3. no need for merchants staff to waste hours a week/month handling chargebacks (less admin)
4. no need to hold logs of transactions for half a decade as its all logged on blockchain (less admin)
5. no credit checks as its all actual funds related
6. no/less need to worry about identity theft issues