"IF a person could just carry their EHAS approval Code to enter the country and that would work, that would be a very good resolution,"
Only if that EHAS code states you were vaccinated and didn't need a test to get on island. If you had to have a test to get on island because you weren't vaccinated then you would constantly need to be tested to go into those establishments and still have to show something. Just carry your vax card or picture on phone and be done with it. Pretty easy.