So currently I’m planning to enter the US with an ESTA on the 21st of December as my F1 Visa only allows me to enter on the 22nd of December. However, I’m unable to change my flight because I booked it with a promotional fare. What I’m planning to do is go to Mexico on the 27th of December for a night and then come back in the next day with my F1 Visa. Is that possible? From what I’ve heard so far it should be ok but I just wanted to ask around.