What type of belongings are allowed into the park such as food, coolers, bags etc.

No limitation

I've brought in a backpack with no problems. The park isn't that big, so you can leave a cooler in your car for lunch and use their picnic tables just outside the gate.

Coolers are ok if you rent a locker I think. You're not technically allowed to eat any outside food in the park though.

We brought in a back pack with snacks and drinks and there was no issue. The parking lot is very close so it would literally take you 2 to 3 min to walk to your car and get anything. They have picnic tables outside the gate

I am not sure but I did see others with food and drinks that they brought in