The announcement for the May, June, and July minicamps don’t mention a “gifted in math” requirement. You should definitely apply!
EDIT: The May, June, and July minicamps differ from the August minicamp in having less advanced math. This doesn’t mean they’re less useful! They do cost money but there may be scholarships available. And there’s no reason you can’t apply to multiple camps.
The announcement for the May, June, and July minicamps don’t mention a “gifted in math” requirement. You should definitely apply!
EDIT: The May, June, and July minicamps differ from the August minicamp in having less advanced math. This doesn’t mean they’re less useful! They do cost money but there may be scholarships available. And there’s no reason you can’t apply to multiple camps.