How fun that your grandsons will be spending time visiting you during their summer vacation! I'm certain that you will have all sorts of fun playing!
The prices are pretty amazing for purchasing Park tickets and Annual Passes as a Florida Resident! The guidelines do state that the discounts are only for the actual resident, so your grandsons would not be eligible since they don't actually live in Florida. I wish I had better news for you, but with all of the requirements to purchase and use the Florida Resident passes, I wouldn't chance it.
Thanks so much for sending in your question, Sharon! Please feel free to write back in if we can help with any other questions you think of!