WELL... Hello everyone!
I am back, from an AMAZING 5 days in NYC! Oh my gosh, I cannot stress enough how unnecessary it was to worry over this stuff. PLEASE, please, if you have any nervous reservations about having a small conviction or arrest or anything like that, just GO. You will not regret it, and you will not get caught out.
We got on our plane at Heathrow with no probs after showing our ESTA's and sat there for the 7.5hr flight slightly nervous about what might occur at the other end. My partner is a nervous person as it is, so I had to keep reminding him to stay calm and not act weird in any way! haha, but he was absolutely fine.
We flew to Newark, not JFK, and the customs queue was TINY (thank god!) it took us a matter of minuets to reach the customs desk. Looking around at the customs officers, they all looked really intimidating and harsh so we were getting really worried by this point, naturally, but you must keep reminding yourselves that it's THEIR JOB to intimidate you and make you feel nervous. So don;t let them win! Anyway, we walked up to our desk and... miraculously, we got a super friendly officer! he smiled and said 'Welcome to the United states, are you here on holiday?' to which we both smiled and replied 'yep!' - I told him we were travelling for my 30th birthday and he wished me a happy birthday and asked what sorts of things I had planned on our trip (he was trying to catch us out by asking things like 'do you know what restaurants you're going to eat at or attractions you want to see?' etc) I told him we had tickets for the Lion King show on Broadway that my family had bought me and he grinned and said 'AWESOME!' haha
This was all going on whilst he was quickly scanning our finger prints, which took seconds.
The ONLY thing he looked at was the form we both filled out on the plane, which stated our hotel address and whether or not we had anything to declare (food, plants etc) He honestly barely looked at our ESTA forms! He looked at our passport photos and studied them fairly well before looking at us to make sure we were the same people, as they always do and then stamped our forms and wished us a happy holiday. It was so pain free and simple. We just acted totally normal and answered his questions honestly and quickly and made sure we were polite and friendly.
I think we WERE lucky to get such a pleasant officer, to be fair. Some of the other ones seemed to really be grilling people and making them a bit uncomfortable, but everyone got through no worries, and I am SURE that my partner can't have been the only person on that flight with a criminal past, no matter how small. They have no access to your criminal record whatsoever, and like people have said here before, the ONLY way they will know anything is IF YOU TELL THEM!
So, go... go on your holiday to the states, and just TICK NO in every box. You will be fine. I promise you