Bitcoin vending machines have been around for 4-5 years.
and now there is an easier version, we can withdraw cash money at an ATM machine without having to have bitcoin but altcoin can also (in real time price conversion)

This would be awesome, imagine If major corporation merchants and vendors decided to allow the implementation of  cryptocurrencies as an viable payment option. Bitcoin would most likely be the first, then maybe Ethereum being a future second choice. You walk up to a beverage or snack machine, perhaps scan your phone or use some kind of near field communication option on your phone, and bam, instant snacks!
  In fact, you could probably add a scanner to read paper wallet public keys, and create some interface on screen to make it simpler. Your a genius bro, this sounds like an awesome idea. Bitcoin ATM's are becoming more popular but a freaking vending machine would be stellar. Get a permit and contract for your local college campus, and bam!
 Just wishful thinking though! Just my two cents 

Japan has realized and it was expected from them being the tech savvy country it is and the leading in technology, it is a must that Bitcoin world has their capital in Japan lol. Japan might give clash to US in terms of economy for their these many contributions to the crypto world.

But it really depends in what kind of items or food is inside of the vending machines to attract the attention of people right? What if they put some prizes first that is promising to boost up the adoption of bitcoin? It is a great marketing idea in the bitcoin space when we are doing things like these. And in addition, they could add up some bitcoin ATM soon, so the people could have bitcoins to use in the vending machines and at the same time, bitcoin adoption could be possible.

The technology is there. Lightning network has been working well, but we need a start-up or something to start developing those vending machines mecanics. I mean it is not that hard - it is just hardware and software aka metal, componenets and a smart contract. RSK offers smart contracts on Bitcoin if I am not mistaken.

We have not been in lightning network though,  But i agree the transaction fees are more than what I am paying back then. But you guys would would consider if buying in vending machines is more benificial unlike buying in actual cashier the you are wrong, I have noticed in fastfood chains here im my country, people do still prefer buying on counter than on kiosk. So I would say having actual cashier is better than having electronic ones of kiosk.

I think it is too early to tell. That maybe a small step for bitcoin's revolution but still it would require getting bitcoin legalized all over the world. Not everyone knows about it yet, some may know the name but not the real use of it so we cannot expect any company or business to collaborate with bitcoin this soon. Maybe in the future, we will not only see vending machines that accepts bitcoin but also every transactions we are making can be paid through bitcoin to promote convenience and less taxes for the people.

Using bitcoin in both small and big transfers is really good no matter how much fee you pay because of the anonimity, bitcoin provides you anonimity in each transactions. Vending machines must use all popular coins it will just depend on the customer on what they want to use.

but not everyone will agree to the transaction costs are quite large. but there are actually many other positive things when using bitcoin, especially with the anonymity they have. so I think bitcoin transactions have their own advantages and disadvantages

I think this is a very good idea and much better than an ATM. You do not have to worry about being robbed since there is no cash in the machine, instead the bitcoins are kept with you on your pc. Less work having to retrieve coins and deposited them into a bank account physically at the bank. This will work well in Japan where they have so many vending machines. You could even start your own currency that is used to pay at these machines and have a project with a purpose. There is untapped potential there. It will also get people interested in adopting crypto themselves. At least them can pay at vending machines so they will not feel they wasting their money on crypto and they will see it works and think its awesome and hopefully never go back to fiat.