Upvote:4
Two points: 1. I called 1-202-325-5120 (number found here: https://esta.cbp.dhs.gov/esta/ ) and was able to speak with someone who said I could travel to the US as a tourist on an ESTA with a return flight. 2. Thank you all for your help! I only made the phone call after reading the advice, that my F1-OPT was definitely done. All makes sense now. Many thanks!