A few "backs" there.

Anyway, friend of mine usually gets yearly Non-Im 'O' (marriage) multis from the UK. This time around he has had to delay his trip home because he is waiting on somebody (without going into specifics). He will be going home and renew his visa some point this month. His visa ran out mid Jan, so he did a quick border hop to mae Sai and got 15 days. He had to do this again last week.

The first 15 days stamp was fine, but on the second the immigration person wrote the number 2 above the stamp and went back to the previous one and wrote 1 above it. He is now worried that if he has to do a quick border run before he leaves for Blighty, he will be refused on the old back-to-back (no more than 2 back to back walkies) - I felt sure in saying that this was changed years back when they moved from 30 to 15 day stamps. However, he is still a bit worried - and I agree that there seems to be no other reason for numbering the stamps.

Incidently his current passport shows 5 back to back yearly multi visas with stamps in and out of the country (both neighbours and back home) and never a day overstay.

So wise oracles of the mighty TV, is he right to be worried - or are they just trying to keep up with their maths?

There is no absolute limit on the number of visa-exempt entries.

He's unlikely to be refused entry if he does another run. However, he may get asked questions about what he's doing in Thailand (on suspicion of working illegally).

If he's married to a Thai he can get 60 day extension at immigration for 1900 Baht to 'visit his wife'. Any reason he's not extending in-country?

There is no absolute limit on the number of visa-exempt entries.

He's unlikely to be refused entry if he does another run. However, he may get asked questions about what he's doing in Thailand (on suspicion of working illegally).

If he's married to a Thai he can get 60 day extension at immigration for 1900 Baht to 'visit his wife'. Any reason he's not extending in-country?

'

That is a handy wrinkle....is that an extension of 15 day'er?

Any entry can be extended 60 days using normal TM.7 and paying 1,900 baht. Marriage certificate/wife/ID and perhaps home register and normal copies of passport should do it. He is unable to extend yearly due to financials?

As to the numbers believe one more would not be an issue but he might be told then not to return until he has exited at another location as a local rule. Some people have recently reported such warnings.