That's excellent, and a very resourceful use of the ACH. Everyone should be aware of the potential benefit. However, Joe Blow who has his interview next week may prefer to spend the time with his SO to prepare for the interview, or the travel time may be prohibitive. Joe need not feel like he's putting a crimp in his case by not attending. Basically, consider your circumstances, consider everyone who has gone before you (some of whom made it to the ACH, others didn't), and what it does to your travel plans, and make your own decision about whether you should go or not. If you're there at the right time, by all means, go, otherwise, don't feel like you've missed out on something.