Hoi An is sweet. Need to fly to Da Nang then a one hour drive. If you want to stay longer, go to Hanoi and book an overnight cruise in Ha Long Bay. But, there are many beautiful places to see. Just depends on the amount of time you have.
Why does it have a chip? But yes, perhaps it’s not stored there.
And yes, I do know what I’m talking about. I have an electronic visa; airline desks in Bangkok can’t see it. Every time I try to fly home they get difficult about my visa.