I have an almost 6 year old who is 42" tall and 31lb and an almost 7 year old 48" tall and 44lb. Is there height requirements to be able to participate in each area or is it parent discretion?

There are height restrictions on the bigger slides. ..

Family friendly, children do not need to be accompanied by adults, but some rides to have height requirements

42" and under have to be accompanied by an adult on slides.