Leaving without cancelling Non B but returning in six months?

[leggo]

I shall be leaving the country early next year the same day as my visa and work permit expires without cancelling either as I am not intending to come back to work here. Shall be going to Vietnam but may want to return on a visa run through Dom Muang in six months - will I encounter problems coming back just for a couple of days ?

[bigt116]

No, you will be fine and get a 30 day visa exempt entry

[Mario2008]

You will be fine.

In your case there is nothing to cancel anyway, as they already expire on that day.