Can you explain how you set them up? Did you buy tablets for them? Do you get a percentage of the bit coin payments they take?
The selling points are fairly obvious. The customer absorbs the transaction fee and there are no chargebacks etc. But the actual setup is something I am trying to work out in my mind.
some go through me direct where i set up a contract and a 'bartab' so that they had the fiat on hand already to cover X amount in bitcoin purchases customers made.
some go through me where i pay them at the end of the day, week, month at set amounts using a price tracker page i designed that validates payments.
some went through bitpay or decided to go self sufficient and exchange or invest at their own choice.
the best way is to not just have 1 fixed plan, bitcoin has a multitude of possibilities so offering the best tailored solution or simply guiding them in the right direction based on their personal circumstances, works.
its just like being a salesman. finding the uses, benefits and matching the features will work alot better then trying to force only 1 plan in their face.
for instance if its a delivery service that likes cash in hand to pay temporary staff, and your town is a small town where maybe one pizza delivery a day may be bought by bitcoin.. then you can hand them maybe just $30-$50 as a bar tab upfront to cover a few days of sales, or maybe you can organise that if the delivery drivers get paid on a friday, you will turn up on thursdays to pay out on the bitcoins.
again multiple ways of doing it if you want to be the payment processor in your town.
there is no one solution fits all, and that is a good thing, so look into what you want to do/offer and treat the business manager like a king, by making him feel special by him making bespoke decisions. which is less of a fight then trying to convince someone that only one way, your way will work.