A constant frustrating in this household is that despite my asking directly everyone seems to want mom to be able to mindread. It doesn't work too well.
A common refrain! LOL, some families have created a menu of options to choose from, for the birthday person to weigh in on activity, food, cake, gift, other. May not work for everyone, but brainstorming and creating a fun birthday menu including budget can inspire great conversations.
Most likely is I probably going to take him to an amusement park next weekend
Sounds like a great way to create happy memories!
Meanwhile, sometimes so many demands can be made on these kids that they are unable to listen to that small voice inside which tells them what they'd really like to be/do. Your son is fortunate to have you as his mom as you understand and support him. Wish I had more helpful thoughts to share. Lending support.