Thanks for all the helpfull feedback
Just need a photo ID that shows your address.
You have to go to the office first to get the key tag
You will be able to go for free after you show proof of residency and get your key tag...if your grandson is NOT a Greece resident I believe they charge a $5 visitor fee
They ask for your id for proof of residency and you'll get a key ring for each of you to use as often as you like.
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