If you think you will have trouble being manipulated, figure out what you are going to say ahead of time and stick to it. Don't deviate.
Also, contact the school about the rules for the prom. It may be that you are borrowing trouble. He may not be able to get in. Even if he was the date of a senior, he could still be on the "excluded" list. Talk to your school about this. At my daughter's prom, even some school students were excluded from the prom for infractions.
Think how your easy child would be crushed if he caused her some embarrassment. Also, can easy child's door be locked so that he cannot access the bathroom?
