@John ******
Thailand doesn't offer anything like a "30-days holiday visa". There is nothing such. There are: a 15-days VOA you can buy for 2000 THB before entering - but only for selected few nations . . . There is the 60-days STAY PERMIT you and citizens of 93 nations get stamped when you arrive without a visa. And last but not least there is the 60-days single entry Tourist Visa that gets you stamped in for 60 days. . . . if you now spend a holiday, or sighseeing, or studying, or travelling around on history's tracks, or hang around in Soi 6 lady's bars, - that's totally up to you. However it doesn't give you the right to call a tourist visa or any of the above "holiday visa"