Everyone has given you very good advice. Just thought I'd chime in with the "RULES" from our local dog park.

All dogs must display a valid license.
Dogs must be current on their vaccinations
Leash all dogs while entering and exiting.
Owners must be within eyesight and voice control over their pets at all times.
Puppies under 4 months are prohibited to protect their own health. .Maximum of 3 dogs per adult.
All children must be monitored and accompanied by a guardian at all times.
Be prepared to leash your dog immediately if your pet becomes unruly, worrisome to others, aggressive to animals or humans, or displays mounting behavior .
Honor the request of others to leash your pet if asked.
Dogs in heat are not permitted
Aggressive and/or vicious dogs are not permitted.
CLEAN UP AFTER YOUR PET! WASTE MUST BE DISPOSED OF COMPLETELY AND IMMEDIATELY


Hope you all get to enjoy your park soon!

P.S. Don't forget to bring the camera