I'd make sure they are current....I've had so many people at work tell me their dog has current shots and they expired months ago. Call the vet you had them done at and make sure. You may even want to go over to the vet and have them print out the info. It's a good thing to have.

I don't know if a license is required to go into a dog park, but it is required by the law so you should get it done anyway. You will have to have proof of current shots to get a license.