@learning19 why would you be obligated. They evidently want you and they are showing you some love. This is one of the best engineering programs in the country
Many would trade places with you.
It seems they will pick you up and get you to Ann Arbor. You don’t need your parents to be there. At the end of 10th grade we flew my son to a summer Berkeley program. They met him at the airport etc. You can do this yourself. If you want your parents to go then just ask them. Call engineering tomorrow and see if they can answer your questions if someone is there.
My son’s in engineering and they will support you with just about anything. It’s a great program.
Also this is EA… It is not binding. But it’s nice to be wanted.