Both my wife and I applied recently for a B2 visa. The purpose is to stay longer period than what ESTA offers (90 days). We're Australian Citizens, in the early 60s, both have full time job with strong ties to our home country Australia. The B2 Visa interview is arranged on Mid June 2019, however currently my wife has a valid ESTA visa waiver and this is valid up-to October 2020 to travel USA. To be on the safer-side and not caught up with any B2 Visa rejection, I am thinking to postpone the B2 visa interview to a future date for both of us and me applying a ESTA visa waiver given any rejection in B2 Visa will trigger cancellation of ESTA visa. By postponing the B2 Visa interview, at least we can visit USA to see few tourist places and see our grandchild, friends and relatives. Once returned from USA we can then attend the B2 Visa interview say middle of 2020. Our understanding is B2 Visa interview can be re-arranged within 365 days of form submission. Could anyone kindly assist by postponing the B2 visa interview to a future date is more appropriate in our situation and better option to making the visit to USA in August 2019 using ESTA? In this way, we are not breaking any rules and not getting stranded at the US port of entry.