Good evening good people. Here is my pretty simple story:

My kids (8,5) and I entered Thailand by air on Visa-Exempt (we are Israeli). We are currently in Koh Phangan. I am planning on getting a 30-day extension in Koh Samui. I have the following questions:

1. Close to the end of my 30-day extension, can I travel to Ranong, Myanmar, stay there for 10 minutes, pay $10 and cross back to Thailand for another 30-day Visa Exempt stay?

2. I have heard reports that young children (under 14) need not worry about extensions, overstay fines and blacklists. Is that true? I have not seen any official document detailing this policy. If such a doc exists, can you point me to it?

3. My passport will expire at the end of this year, Is this a problem?

Some more background information:

In addition to our current stay, this year we've entered Thailand twice by air and left once by air and once by land (no extensions, no overstays). Last year we entered by air on a 60-day tourist visa and extended it by 30 days and left by air (no overstays)

Thank you for your time and effort