My wife and I are...

Dear Sir/madam,

Thanks so much for your concerns 

We would like to confirm that Irish and Venezuelan passport  holders need visa to enter Vietnam, and you can apply Visa on arrival online. Please kindly check this link to apply: https://www.vietnam-evisa.org/apply-visa.html.

After receiving your successful application, we will send you the  approval letter via email, then you can use this letter to get visa stamp at the airport when you arrive in Vietnam.

Kind regards,

Evisa team.