The replies I get are variously "Up to you", "don't spend too much". She has no interest in going home, as she hasn't been back there in 20 years, her parents are both dead, as is her brother.
My question was whether conceptually something equivalent exists in Thailand similar to an English Church Blessing. I know various outfits offer something like that for tourists marrying, with Bhuddism etc, but I'm not sure if that thing is acceptable to Thai people. Forum members I assume have collective experience, but your reply indicates there is no good advice on marrige matters on this forum (so why is there a section on it?).
For instance, do you have a notion of what Thai people in general think, or whether there is a spectrum of opinion. I have a fair idea, in the UK, what most people would think of a Church blessing, and in general I think most would be quite positive about it. There will be some bitterly opposed to it, either because they are atheists in the extreme, or because they view something cut down as somewhat ungodly. I would be quite comfortable expressing my opinion of British society to a foreigner. But you post on a forum expressing an unwillingness to express an opinion. Perhaps you have no opinion, no experience of Thai culture, but wanted to express that non-opinion.