...is nothing more than what it states. "Enhanced Penalty." Basically, you can carry in a park. The statute is there to potentially double any penalty for a firearms offense while within the dreaded "1000" foot mark.724.4A Weapons free zones — enhanced penalties.
1. As used in this section, “weapons free zone” means the area in or on, or within one
thousand feet of, the real property comprising a public or private elementary or secondary
school, or in or on the real property comprising a public park.
If this were to prevent guns within that zone, lots of people would instantly be in violation when they walked out the door of their home with a gun. So, in my, amateur, non-lawyer, study the laws on my own time, opinion, yes. You can carry in a park.