Success. We went to Krabi immigration office yesterday for a 30 day extension on our 45 day visa exempt. It only took 15 minutes! They wanted proof, and the address, of where we are currently staying so I showed them a picture from my phone of our booking from the hotel files and a business card. That plus passport, 1900 baht each and an extra 100 for a photo they took. It took longer to exchange 100 Canadian at the bank. Thank you everyone who gave me advice.