If no symptoms, probably no presbyopia.
Forget the optometrist. They will always try to sell you something! For actual eye health checkups, see an ophthalmologist, generally take any myopia and presbyopia sales with various grains of salt.
Measure as you like. More often means more data points, but maybe gets annoying after a while.
Yay for kids having more child-appropriate activities. They want to play, I think part of our parenting job is to find what their personalities are most likely to get into.