I did fill in the paperwork, it was the lady at the check in desk that stopped me and asked for proof, as a new build in thailand on my girlfriends own land no proof was available, no blue book untill property complete. That was only issue, lack of proof.
buying a house is a good reason, it's on the list, just make sure you have proof, im still building so no blue book or other info, fortunately they took my pictures of the proof eventually
"Update" I'm now in my ASQ in Bangkok, lady that first refused me I asked her to ask her supervisor, supervisor called Amsterdam supervisor (connecting flight) and she said OK, so I just managed to catch flight after 3 very fraught hours.
Very good otherwise, thanks for all the help and encouragement (most people)