@Martin ********
the O/P says they got their yearly extension in Jomtien, they're going to continue using that office for their extensions and they just move hotel to hotel still in Chonburi province,
Seeing as hotels don't provide blue books or owners i/ds ๐I think they'll be okay with a letter from the hotel that they are a "long stay" guest BUT as I advised they should check with the Jomtien immigration office well before they get their next extension